From 94918ae84bec80c9aca7b03e14b2d0f2ddb76123 Mon Sep 17 00:00:00 2001
From: sdong <siying.d@fb.com>
Date: Fri, 15 Jan 2016 14:13:08 -0800
Subject: [PATCH] db_bench: explicitly clear buffer in compress benchmark

Summary: It is reported that in compress benchmark in db_bench, zlib will cause an OOM. The suggestd fix was to clear the buffer.

Test Plan: Build and run compress benchmark.

Reviewers: IslamAbdelRahman, yhchiang, rven, andrewkr, kradhakrishnan, anthony

Reviewed By: anthony

Subscribers: leveldb, dhruba

Differential Revision: https://reviews.facebook.net/D52857
---
 db/db_bench.cc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/db/db_bench.cc b/db/db_bench.cc
index a07798b41..a0d767ea6 100644
--- a/db/db_bench.cc
+++ b/db/db_bench.cc
@@ -2262,6 +2262,7 @@ class Benchmark {
 
     // Compress 1G
     while (ok && bytes < int64_t(1) << 30) {
+      compressed.clear();
       ok = CompressSlice(input, &compressed);
       produced += compressed.size();
       bytes += input.size();