hdfs cleanup and compile test against CDH 4.4.
This commit is contained in:
Mike Orr
parent
bd1105aa5a
commit
c2fda55cfe
@ -289,7 +289,7 @@ if test "$USE_HDFS"; then
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exit 1
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fi
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HDFS_CCFLAGS="$HDFS_CCFLAGS -I$JAVA_HOME/include -I$JAVA_HOME/include/linux -DUSE_HDFS"
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HDFS_LDFLAGS="$HDFS_LDFLAGS -Wl,--no-whole-archive hdfs/libhdfs.a -L$JAVA_HOME/jre/lib/amd64"
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HDFS_LDFLAGS="$HDFS_LDFLAGS -Wl,--no-whole-archive -lhdfs -L$JAVA_HOME/jre/lib/amd64"
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HDFS_LDFLAGS="$HDFS_LDFLAGS -L$JAVA_HOME/jre/lib/amd64/server -L$GLIBC_RUNTIME_PATH/lib"
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HDFS_LDFLAGS="$HDFS_LDFLAGS -ldl -lverify -ljava -ljvm"
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COMMON_FLAGS="$COMMON_FLAGS $HDFS_CCFLAGS"
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13
hdfs/README
13
hdfs/README
@ -1,19 +1,16 @@
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This directory contains the hdfs extensions needed to make rocksdb store
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files in HDFS.
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The hdfs.h file is copied from the Apache Hadoop 1.0 source code.
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It defines the libhdfs library
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(http://hadoop.apache.org/common/docs/r0.20.2/libhdfs.html) to access
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data in HDFS. The libhdfs.a is copied from the Apache Hadoop 1.0 build.
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It implements the API defined in hdfs.h. If your hadoop cluster is running
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a different hadoop release, then install these two files manually from your
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hadoop distribution and then recompile rocksdb.
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It has been compiled and testing against CDH 4.4 (2.0.0+1475-1.cdh4.4.0.p0.23~precise-cdh4.4.0).
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The configuration assumes that packages libhdfs0, libhdfs0-dev are
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installed which basically means that hdfs.h is in /usr/include and libhdfs in /usr/lib
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The env_hdfs.h file defines the rocksdb objects that are needed to talk to an
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underlying filesystem.
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If you want to compile rocksdb with hdfs support, please set the following
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enviroment variables appropriately:
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enviroment variables appropriately (also defined in setup.sh for convenience)
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USE_HDFS=1
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JAVA_HOME=/usr/local/jdk-6u22-64
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LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/jdk-6u22-64/jre/lib/amd64/server:/usr/local/jdk-6u22-64/jre/lib/amd64/:./snappy/libs
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@ -14,7 +14,7 @@
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#include "rocksdb/status.h"
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#ifdef USE_HDFS
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#include "hdfs/hdfs.h"
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#include <hdfs.h>
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namespace rocksdb {
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477
hdfs/hdfs.h
477
hdfs/hdfs.h
@ -1,477 +0,0 @@
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// Copyright (c) 2013, Facebook, Inc. All rights reserved.
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// This source code is licensed under the BSD-style license found in the
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// LICENSE file in the root directory of this source tree. An additional grant
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// of patent rights can be found in the PATENTS file in the same directory.
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//
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#ifndef LIBHDFS_HDFS_H
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#define LIBHDFS_HDFS_H
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdint.h>
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#include <string.h>
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#include <stdlib.h>
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#include <time.h>
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#include <errno.h>
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#include <jni.h>
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#ifndef O_RDONLY
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#define O_RDONLY 1
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#endif
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#ifndef O_WRONLY
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#define O_WRONLY 2
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#endif
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#ifndef EINTERNAL
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#define EINTERNAL 255
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#endif
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/** All APIs set errno to meaningful values */
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* Some utility decls used in libhdfs.
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*/
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typedef int32_t tSize; /// size of data for read/write io ops
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typedef time_t tTime; /// time type in seconds
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typedef int64_t tOffset;/// offset within the file
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typedef uint16_t tPort; /// port
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typedef enum tObjectKind {
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kObjectKindFile = 'F',
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kObjectKindDirectory = 'D',
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} tObjectKind;
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/**
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* The C reflection of org.apache.org.hadoop.FileSystem .
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*/
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typedef void* hdfsFS;
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/**
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* The C equivalent of org.apache.org.hadoop.FSData(Input|Output)Stream .
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*/
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enum hdfsStreamType
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{
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UNINITIALIZED = 0,
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INPUT = 1,
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OUTPUT = 2,
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};
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/**
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* The 'file-handle' to a file in hdfs.
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*/
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struct hdfsFile_internal {
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void* file;
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enum hdfsStreamType type;
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};
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typedef struct hdfsFile_internal* hdfsFile;
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/**
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* hdfsConnectAsUser - Connect to a hdfs file system as a specific user
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* Connect to the hdfs.
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* @param host A string containing either a host name, or an ip address
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* of the namenode of a hdfs cluster. 'host' should be passed as NULL if
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* you want to connect to local filesystem. 'host' should be passed as
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* 'default' (and port as 0) to used the 'configured' filesystem
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* (core-site/core-default.xml).
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* @param port The port on which the server is listening.
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* @param user the user name (this is hadoop domain user). Or NULL is equivelant to hhdfsConnect(host, port)
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* @param groups the groups (these are hadoop domain groups)
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* @return Returns a handle to the filesystem or NULL on error.
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*/
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hdfsFS hdfsConnectAsUser(const char* host, tPort port, const char *user , const char *groups[], int groups_size );
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/**
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* hdfsConnect - Connect to a hdfs file system.
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* Connect to the hdfs.
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* @param host A string containing either a host name, or an ip address
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* of the namenode of a hdfs cluster. 'host' should be passed as NULL if
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* you want to connect to local filesystem. 'host' should be passed as
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* 'default' (and port as 0) to used the 'configured' filesystem
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* (core-site/core-default.xml).
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* @param port The port on which the server is listening.
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* @return Returns a handle to the filesystem or NULL on error.
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*/
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hdfsFS hdfsConnect(const char* host, tPort port);
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/**
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* This are the same as hdfsConnectAsUser except that every invocation returns a new FileSystem handle.
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* Applications should call a hdfsDisconnect for every call to hdfsConnectAsUserNewInstance.
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*/
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hdfsFS hdfsConnectAsUserNewInstance(const char* host, tPort port, const char *user , const char *groups[], int groups_size );
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hdfsFS hdfsConnectNewInstance(const char* host, tPort port);
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hdfsFS hdfsConnectPath(const char* uri);
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/**
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* hdfsDisconnect - Disconnect from the hdfs file system.
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* Disconnect from hdfs.
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* @param fs The configured filesystem handle.
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* @return Returns 0 on success, -1 on error.
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*/
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int hdfsDisconnect(hdfsFS fs);
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/**
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* hdfsOpenFile - Open a hdfs file in given mode.
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* @param fs The configured filesystem handle.
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* @param path The full path to the file.
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* @param flags - an | of bits/fcntl.h file flags - supported flags are O_RDONLY, O_WRONLY (meaning create or overwrite i.e., implies O_TRUNCAT),
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* O_WRONLY|O_APPEND. Other flags are generally ignored other than (O_RDWR || (O_EXCL & O_CREAT)) which return NULL and set errno equal ENOTSUP.
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* @param bufferSize Size of buffer for read/write - pass 0 if you want
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* to use the default configured values.
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* @param replication Block replication - pass 0 if you want to use
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* the default configured values.
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* @param blocksize Size of block - pass 0 if you want to use the
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* default configured values.
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* @return Returns the handle to the open file or NULL on error.
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*/
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hdfsFile hdfsOpenFile(hdfsFS fs, const char* path, int flags,
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int bufferSize, short replication, tSize blocksize);
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/**
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* hdfsCloseFile - Close an open file.
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* @param fs The configured filesystem handle.
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* @param file The file handle.
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* @return Returns 0 on success, -1 on error.
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*/
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int hdfsCloseFile(hdfsFS fs, hdfsFile file);
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/**
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* hdfsExists - Checks if a given path exsits on the filesystem
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* @param fs The configured filesystem handle.
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* @param path The path to look for
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* @return Returns 0 on exists, 1 on non-exists, -1/-2 on error.
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*/
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int hdfsExists(hdfsFS fs, const char *path);
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/**
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* hdfsSeek - Seek to given offset in file.
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* This works only for files opened in read-only mode.
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* @param fs The configured filesystem handle.
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* @param file The file handle.
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* @param desiredPos Offset into the file to seek into.
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* @return Returns 0 on success, -1 on error.
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*/
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int hdfsSeek(hdfsFS fs, hdfsFile file, tOffset desiredPos);
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/**
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* hdfsTell - Get the current offset in the file, in bytes.
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* @param fs The configured filesystem handle.
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* @param file The file handle.
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* @return Current offset, -1 on error.
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*/
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tOffset hdfsTell(hdfsFS fs, hdfsFile file);
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/**
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* hdfsRead - Read data from an open file.
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* @param fs The configured filesystem handle.
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* @param file The file handle.
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* @param buffer The buffer to copy read bytes into.
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* @param length The length of the buffer.
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* @return Returns the number of bytes actually read, possibly less
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* than than length;-1 on error.
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*/
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tSize hdfsRead(hdfsFS fs, hdfsFile file, void* buffer, tSize length);
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/**
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* hdfsPread - Positional read of data from an open file.
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* @param fs The configured filesystem handle.
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* @param file The file handle.
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* @param position Position from which to read
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* @param buffer The buffer to copy read bytes into.
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* @param length The length of the buffer.
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* @return Returns the number of bytes actually read, possibly less than
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* than length;-1 on error.
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*/
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tSize hdfsPread(hdfsFS fs, hdfsFile file, tOffset position,
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void* buffer, tSize length);
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/**
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* hdfsWrite - Write data into an open file.
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* @param fs The configured filesystem handle.
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* @param file The file handle.
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* @param buffer The data.
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* @param length The no. of bytes to write.
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* @return Returns the number of bytes written, -1 on error.
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*/
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tSize hdfsWrite(hdfsFS fs, hdfsFile file, const void* buffer,
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tSize length);
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/**
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* hdfsWrite - Flush the data.
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* @param fs The configured filesystem handle.
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* @param file The file handle.
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* @return Returns 0 on success, -1 on error.
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*/
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int hdfsFlush(hdfsFS fs, hdfsFile file);
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/**
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* hdfsSync - Sync the data to persistent store.
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* @param fs The configured filesystem handle.
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* @param file The file handle.
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* @return Returns 0 on success, -1 on error.
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*/
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int hdfsSync(hdfsFS fs, hdfsFile file);
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/**
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* hdfsGetNumReplicasInPipeline - get number of remaining replicas in
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* pipeline
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* @param fs The configured filesystem handle
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* @param file the file handle
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* @return returns the # of datanodes in the write pipeline; -1 on error
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*/
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int hdfsGetNumCurrentReplicas(hdfsFS, hdfsFile file);
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/**
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* hdfsAvailable - Number of bytes that can be read from this
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* input stream without blocking.
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* @param fs The configured filesystem handle.
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* @param file The file handle.
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* @return Returns available bytes; -1 on error.
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*/
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int hdfsAvailable(hdfsFS fs, hdfsFile file);
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/**
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* hdfsCopy - Copy file from one filesystem to another.
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* @param srcFS The handle to source filesystem.
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* @param src The path of source file.
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* @param dstFS The handle to destination filesystem.
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* @param dst The path of destination file.
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* @return Returns 0 on success, -1 on error.
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*/
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int hdfsCopy(hdfsFS srcFS, const char* src, hdfsFS dstFS, const char* dst);
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/**
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* hdfsMove - Move file from one filesystem to another.
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* @param srcFS The handle to source filesystem.
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* @param src The path of source file.
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* @param dstFS The handle to destination filesystem.
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* @param dst The path of destination file.
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* @return Returns 0 on success, -1 on error.
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*/
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int hdfsMove(hdfsFS srcFS, const char* src, hdfsFS dstFS, const char* dst);
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/**
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* hdfsDelete - Delete file.
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* @param fs The configured filesystem handle.
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* @param path The path of the file.
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* @return Returns 0 on success, -1 on error.
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*/
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int hdfsDelete(hdfsFS fs, const char* path);
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/**
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* hdfsRename - Rename file.
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* @param fs The configured filesystem handle.
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* @param oldPath The path of the source file.
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* @param newPath The path of the destination file.
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* @return Returns 0 on success, -1 on error.
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*/
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int hdfsRename(hdfsFS fs, const char* oldPath, const char* newPath);
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/**
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* hdfsGetWorkingDirectory - Get the current working directory for
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* the given filesystem.
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* @param fs The configured filesystem handle.
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* @param buffer The user-buffer to copy path of cwd into.
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* @param bufferSize The length of user-buffer.
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* @return Returns buffer, NULL on error.
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*/
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char* hdfsGetWorkingDirectory(hdfsFS fs, char *buffer, size_t bufferSize);
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/**
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* hdfsSetWorkingDirectory - Set the working directory. All relative
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* paths will be resolved relative to it.
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* @param fs The configured filesystem handle.
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* @param path The path of the new 'cwd'.
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* @return Returns 0 on success, -1 on error.
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*/
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int hdfsSetWorkingDirectory(hdfsFS fs, const char* path);
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/**
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* hdfsCreateDirectory - Make the given file and all non-existent
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* parents into directories.
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* @param fs The configured filesystem handle.
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* @param path The path of the directory.
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* @return Returns 0 on success, -1 on error.
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*/
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int hdfsCreateDirectory(hdfsFS fs, const char* path);
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/**
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* hdfsSetReplication - Set the replication of the specified
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* file to the supplied value
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* @param fs The configured filesystem handle.
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* @param path The path of the file.
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* @return Returns 0 on success, -1 on error.
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*/
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int hdfsSetReplication(hdfsFS fs, const char* path, int16_t replication);
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/**
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* hdfsFileInfo - Information about a file/directory.
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*/
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typedef struct {
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tObjectKind mKind; /* file or directory */
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char *mName; /* the name of the file */
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tTime mLastMod; /* the last modification time for the file in seconds */
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tOffset mSize; /* the size of the file in bytes */
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short mReplication; /* the count of replicas */
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tOffset mBlockSize; /* the block size for the file */
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char *mOwner; /* the owner of the file */
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char *mGroup; /* the group associated with the file */
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short mPermissions; /* the permissions associated with the file */
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tTime mLastAccess; /* the last access time for the file in seconds */
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} hdfsFileInfo;
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/**
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* hdfsListDirectory - Get list of files/directories for a given
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* directory-path. hdfsFreeFileInfo should be called to deallocate memory if
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* the function returns non-NULL value.
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* @param fs The configured filesystem handle.
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* @param path The path of the directory.
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* @param numEntries Set to the number of files/directories in path.
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* @return Returns a dynamically-allocated array of hdfsFileInfo
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* objects; NULL if empty or on error.
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* on error, numEntries will be -1.
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*/
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hdfsFileInfo *hdfsListDirectory(hdfsFS fs, const char* path,
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int *numEntries);
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/**
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* hdfsGetPathInfo - Get information about a path as a (dynamically
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* allocated) single hdfsFileInfo struct. hdfsFreeFileInfo should be
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* called when the pointer is no longer needed.
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* @param fs The configured filesystem handle.
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* @param path The path of the file.
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* @return Returns a dynamically-allocated hdfsFileInfo object;
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* NULL on error.
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*/
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hdfsFileInfo *hdfsGetPathInfo(hdfsFS fs, const char* path);
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/**
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* hdfsFreeFileInfo - Free up the hdfsFileInfo array (including fields)
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* @param hdfsFileInfo The array of dynamically-allocated hdfsFileInfo
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* objects.
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* @param numEntries The size of the array.
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*/
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void hdfsFreeFileInfo(hdfsFileInfo *hdfsFileInfo, int numEntries);
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/**
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* hdfsGetHosts - Get hostnames where a particular block (determined by
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* pos & blocksize) of a file is stored. The last element in the array
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* is NULL. Due to replication, a single block could be present on
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* multiple hosts.
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* @param fs The configured filesystem handle.
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* @param path The path of the file.
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* @param start The start of the block.
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* @param length The length of the block.
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* @return Returns a dynamically-allocated 2-d array of blocks-hosts;
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* NULL on error.
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*/
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char*** hdfsGetHosts(hdfsFS fs, const char* path,
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tOffset start, tOffset length);
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/**
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* hdfsFreeHosts - Free up the structure returned by hdfsGetHosts
|
||||
* @param hdfsFileInfo The array of dynamically-allocated hdfsFileInfo
|
||||
* objects.
|
||||
* @param numEntries The size of the array.
|
||||
*/
|
||||
void hdfsFreeHosts(char ***blockHosts);
|
||||
|
||||
|
||||
/**
|
||||
* hdfsGetDefaultBlockSize - Get the optimum blocksize.
|
||||
* @param fs The configured filesystem handle.
|
||||
* @return Returns the blocksize; -1 on error.
|
||||
*/
|
||||
tOffset hdfsGetDefaultBlockSize(hdfsFS fs);
|
||||
|
||||
|
||||
/**
|
||||
* hdfsGetCapacity - Return the raw capacity of the filesystem.
|
||||
* @param fs The configured filesystem handle.
|
||||
* @return Returns the raw-capacity; -1 on error.
|
||||
*/
|
||||
tOffset hdfsGetCapacity(hdfsFS fs);
|
||||
|
||||
|
||||
/**
|
||||
* hdfsGetUsed - Return the total raw size of all files in the filesystem.
|
||||
* @param fs The configured filesystem handle.
|
||||
* @return Returns the total-size; -1 on error.
|
||||
*/
|
||||
tOffset hdfsGetUsed(hdfsFS fs);
|
||||
|
||||
/**
|
||||
* hdfsChown
|
||||
* @param fs The configured filesystem handle.
|
||||
* @param path the path to the file or directory
|
||||
* @param owner this is a string in Hadoop land. Set to null or "" if only setting group
|
||||
* @param group this is a string in Hadoop land. Set to null or "" if only setting user
|
||||
* @return 0 on success else -1
|
||||
*/
|
||||
int hdfsChown(hdfsFS fs, const char* path, const char *owner, const char *group);
|
||||
|
||||
/**
|
||||
* hdfsChmod
|
||||
* @param fs The configured filesystem handle.
|
||||
* @param path the path to the file or directory
|
||||
* @param mode the bitmask to set it to
|
||||
* @return 0 on success else -1
|
||||
*/
|
||||
int hdfsChmod(hdfsFS fs, const char* path, short mode);
|
||||
|
||||
/**
|
||||
* hdfsUtime
|
||||
* @param fs The configured filesystem handle.
|
||||
* @param path the path to the file or directory
|
||||
* @param mtime new modification time or 0 for only set access time in seconds
|
||||
* @param atime new access time or 0 for only set modification time in seconds
|
||||
* @return 0 on success else -1
|
||||
*/
|
||||
int hdfsUtime(hdfsFS fs, const char* path, tTime mtime, tTime atime);
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif /*LIBHDFS_HDFS_H*/
|
||||
|
||||
/**
|
||||
* vim: ts=4: sw=4: et
|
||||
*/
|
||||
BIN
hdfs/libhdfs.a
BIN
hdfs/libhdfs.a
Binary file not shown.
7
hdfs/setup.sh
Normal file
7
hdfs/setup.sh
Normal file
@ -0,0 +1,7 @@
|
||||
export USE_HDFS=1
|
||||
export LD_LIBRARY_PATH=$JAVA_HOME/jre/lib/amd64/server:$JAVA_HOME/jre/lib/amd64:/usr/lib/hadoop/lib/native
|
||||
|
||||
export CLASSPATH=
|
||||
for f in `find /usr/lib/hadoop-hdfs | grep jar`; do export CLASSPATH=$CLASSPATH:$f; done
|
||||
for f in `find /usr/lib/hadoop | grep jar`; do export CLASSPATH=$CLASSPATH:$f; done
|
||||
for f in `find /usr/lib/hadoop/client | grep jar`; do export CLASSPATH=$CLASSPATH:$f; done
|
||||
@ -15,11 +15,11 @@
|
||||
#include <sstream>
|
||||
#include "rocksdb/env.h"
|
||||
#include "rocksdb/status.h"
|
||||
#include "hdfs/hdfs.h"
|
||||
#include "hdfs/env_hdfs.h"
|
||||
|
||||
#define HDFS_EXISTS 0
|
||||
#define HDFS_DOESNT_EXIST 1
|
||||
#define HDFS_DOESNT_EXIST -1
|
||||
#define HDFS_SUCCESS 0
|
||||
|
||||
//
|
||||
// This file defines an HDFS environment for rocksdb. It uses the libhdfs
|
||||
@ -223,7 +223,7 @@ class HdfsWritableFile: public WritableFile {
|
||||
if (hdfsFlush(fileSys_, hfile_) == -1) {
|
||||
return IOError(filename_, errno);
|
||||
}
|
||||
if (hdfsSync(fileSys_, hfile_) == -1) {
|
||||
if (hdfsHSync(fileSys_, hfile_) == -1) {
|
||||
return IOError(filename_, errno);
|
||||
}
|
||||
Log(mylog, "[hdfs] HdfsWritableFile Synced %s\n", filename_.c_str());
|
||||
@ -398,12 +398,40 @@ Status HdfsEnv::NewRandomRWFile(const std::string& fname,
|
||||
return Status::NotSupported("NewRandomRWFile not supported on HdfsEnv");
|
||||
}
|
||||
|
||||
class HdfsDirectory : public Directory {
|
||||
public:
|
||||
explicit HdfsDirectory(int fd) : fd_(fd) {}
|
||||
~HdfsDirectory() {
|
||||
//close(fd_);
|
||||
}
|
||||
|
||||
virtual Status Fsync() {
|
||||
//if (fsync(fd_) == -1) {
|
||||
// return IOError("directory", errno);
|
||||
// }
|
||||
return Status::OK();
|
||||
}
|
||||
|
||||
private:
|
||||
int fd_;
|
||||
};
|
||||
|
||||
Status HdfsEnv::NewDirectory(const std::string& name,
|
||||
unique_ptr<Directory>* result) {
|
||||
return Status::NotSupported("NewDirectory not supported on HdfsEnv");
|
||||
|
||||
int value = hdfsCreateDirectory(fileSys_, name.c_str());
|
||||
result->reset(new HdfsDirectory(0));
|
||||
switch (value) {
|
||||
case HDFS_SUCCESS: // directory created
|
||||
return Status::OK();
|
||||
default:
|
||||
Log(mylog, "directory already exists ");
|
||||
return Status::OK();
|
||||
}
|
||||
}
|
||||
|
||||
bool HdfsEnv::FileExists(const std::string& fname) {
|
||||
|
||||
int value = hdfsExists(fileSys_, fname.c_str());
|
||||
switch (value) {
|
||||
case HDFS_EXISTS:
|
||||
@ -412,8 +440,8 @@ bool HdfsEnv::FileExists(const std::string& fname) {
|
||||
return false;
|
||||
default: // anything else should be an error
|
||||
Log(mylog, "FileExists hdfsExists call failed");
|
||||
throw HdfsFatalException("hdfsExists call failed with error " +
|
||||
std::to_string(value) + ".\n");
|
||||
throw HdfsFatalException("1. hdfsExists call failed with error " +
|
||||
std::to_string(value) + " on path " + fname + ".\n");
|
||||
}
|
||||
}
|
||||
|
||||
@ -449,13 +477,13 @@ Status HdfsEnv::GetChildren(const std::string& path,
|
||||
default: // anything else should be an error
|
||||
Log(mylog, "GetChildren hdfsExists call failed");
|
||||
throw HdfsFatalException("hdfsExists call failed with error " +
|
||||
std::to_string(value) + ".\n");
|
||||
std::to_string(value) + " on path " + path.c_str() + ".\n");
|
||||
}
|
||||
return Status::OK();
|
||||
}
|
||||
|
||||
Status HdfsEnv::DeleteFile(const std::string& fname) {
|
||||
if (hdfsDelete(fileSys_, fname.c_str()) == 0) {
|
||||
if (hdfsDelete(fileSys_, fname.c_str(),1) == 0) {
|
||||
return Status::OK();
|
||||
}
|
||||
return IOError(fname, errno);
|
||||
@ -478,7 +506,7 @@ Status HdfsEnv::CreateDirIfMissing(const std::string& name) {
|
||||
return CreateDir(name);
|
||||
default: // anything else should be an error
|
||||
Log(mylog, "CreateDirIfMissing hdfsExists call failed");
|
||||
throw HdfsFatalException("hdfsExists call failed with error " +
|
||||
throw HdfsFatalException("3. hdfsExists call failed with error " +
|
||||
std::to_string(value) + ".\n");
|
||||
}
|
||||
};
|
||||
@ -514,7 +542,7 @@ Status HdfsEnv::GetFileModificationTime(const std::string& fname,
|
||||
// target already exists. So, we delete the target before attemting the
|
||||
// rename.
|
||||
Status HdfsEnv::RenameFile(const std::string& src, const std::string& target) {
|
||||
hdfsDelete(fileSys_, target.c_str());
|
||||
hdfsDelete(fileSys_, target.c_str(), 1);
|
||||
if (hdfsRename(fileSys_, src.c_str(), target.c_str()) == 0) {
|
||||
return Status::OK();
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user