From a6e38fd170679e5844590e317b29712b7e418d3f Mon Sep 17 00:00:00 2001
From: sdong <siying.d@fb.com>
Date: Fri, 10 Jul 2015 16:09:10 -0700
Subject: [PATCH] Fix a uncleaned counter in PerfContext::Reset()

Summary:
new_table_iterator_nanos is not cleaned in PerfContext::Reset() while new_table_block_iter_nanos is cleaned twice. Fix it.
Also fix a comment.

Test Plan: Build and db_bench with --perf_context to see the value shown.

Reviewers: kradhakrishnan, anthony, yhchiang, igor

Reviewed By: igor

Subscribers: leveldb, dhruba

Differential Revision: https://reviews.facebook.net/D41721
---
 include/rocksdb/perf_context.h | 2 +-
 util/perf_context.cc           | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/rocksdb/perf_context.h b/include/rocksdb/perf_context.h
index aee719ff1..126d16572 100644
--- a/include/rocksdb/perf_context.h
+++ b/include/rocksdb/perf_context.h
@@ -78,7 +78,7 @@ struct PerfContext {
   uint64_t read_filter_block_nanos;
   // Time spent on creating data block iterator
   uint64_t new_table_block_iter_nanos;
-  // Time spent on new_table_block_iter_micros
+  // Time spent on creating a iterator of an SST file.
   uint64_t new_table_iterator_nanos;
   // Time spent on seeking a key in data/index blocks
   uint64_t block_seek_nanos;
diff --git a/util/perf_context.cc b/util/perf_context.cc
index 2ba35ca72..643b3f004 100644
--- a/util/perf_context.cc
+++ b/util/perf_context.cc
@@ -50,7 +50,7 @@ void PerfContext::Reset() {
   read_index_block_nanos = 0;
   read_filter_block_nanos = 0;
   new_table_block_iter_nanos = 0;
-  new_table_block_iter_nanos = 0;
+  new_table_iterator_nanos = 0;
   block_seek_nanos = 0;
   find_table_nanos = 0;
 #endif