rocksdb/db/builder.cc
heyongqiang fcb2ea4715 disable data sync options needs to be checked when doing level-0 dump Summary:
Summary: as subject

Test Plan: use db_bench

Reviewers: dhruba

Differential Revision: https://reviews.facebook.net/D4671
2012-08-15 16:39:02 -07:00

89 lines
2.1 KiB
C++

// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file. See the AUTHORS file for names of contributors.
#include "db/builder.h"
#include "db/filename.h"
#include "db/dbformat.h"
#include "db/table_cache.h"
#include "db/version_edit.h"
#include "leveldb/db.h"
#include "leveldb/env.h"
#include "leveldb/iterator.h"
namespace leveldb {
Status BuildTable(const std::string& dbname,
Env* env,
const Options& options,
TableCache* table_cache,
Iterator* iter,
FileMetaData* meta) {
Status s;
meta->file_size = 0;
iter->SeekToFirst();
std::string fname = TableFileName(dbname, meta->number);
if (iter->Valid()) {
WritableFile* file;
s = env->NewWritableFile(fname, &file);
if (!s.ok()) {
return s;
}
TableBuilder* builder = new TableBuilder(options, file);
meta->smallest.DecodeFrom(iter->key());
for (; iter->Valid(); iter->Next()) {
Slice key = iter->key();
meta->largest.DecodeFrom(key);
builder->Add(key, iter->value());
}
// Finish and check for builder errors
if (s.ok()) {
s = builder->Finish();
if (s.ok()) {
meta->file_size = builder->FileSize();
assert(meta->file_size > 0);
}
} else {
builder->Abandon();
}
delete builder;
// Finish and check for file errors
if (s.ok() && !options.disableDataSync) {
s = file->Sync();
}
if (s.ok()) {
s = file->Close();
}
delete file;
file = NULL;
if (s.ok()) {
// Verify that the table is usable
Iterator* it = table_cache->NewIterator(ReadOptions(),
meta->number,
meta->file_size);
s = it->status();
delete it;
}
}
// Check for input iterator errors
if (!iter->status().ok()) {
s = iter->status();
}
if (s.ok() && meta->file_size > 0) {
// Keep it
} else {
env->DeleteFile(fname);
}
return s;
}
} // namespace leveldb