Repository: hadoop Updated Branches: refs/heads/branch-2 87c2d915f -> 8efcf5bdb
HDFS-7397. Add more detail to the documentation for the conf key "dfs.client.read.shortcircuit.streams.cache.size" (Brahma Reddy Battula via Colin P. McCabe) (cherry picked from commit 3fe79e1db84391cb17dbed6b579fe9c803b3d1c2) Project: http://git-wip-us.apache.org/repos/asf/hadoop/repo Commit: http://git-wip-us.apache.org/repos/asf/hadoop/commit/8efcf5bd Tree: http://git-wip-us.apache.org/repos/asf/hadoop/tree/8efcf5bd Diff: http://git-wip-us.apache.org/repos/asf/hadoop/diff/8efcf5bd Branch: refs/heads/branch-2 Commit: 8efcf5bdbd247915b904eca0b645d2cc3a073b49 Parents: 87c2d91 Author: Colin Patrick Mccabe <[email protected]> Authored: Mon May 4 12:50:29 2015 -0700 Committer: Colin Patrick Mccabe <[email protected]> Committed: Mon May 4 12:50:59 2015 -0700 ---------------------------------------------------------------------- hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt | 4 ++++ .../hadoop-hdfs/src/main/resources/hdfs-default.xml | 2 +- 2 files changed, 5 insertions(+), 1 deletion(-) ---------------------------------------------------------------------- http://git-wip-us.apache.org/repos/asf/hadoop/blob/8efcf5bd/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt ---------------------------------------------------------------------- diff --git a/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt b/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt index 5738541..2c9ab69 100644 --- a/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt +++ b/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt @@ -173,6 +173,10 @@ Release 2.8.0 - UNRELEASED HDFS-8249. Separate HdfsConstants into the client and the server side class. (wheat9) + HDFS-7397. Add more detail to the documentation for the conf key + "dfs.client.read.shortcircuit.streams.cache.size" (Brahma Reddy Battula via + Colin P. McCabe) + OPTIMIZATIONS HDFS-8026. Trace FSOutputSummer#writeChecksumChunks rather than http://git-wip-us.apache.org/repos/asf/hadoop/blob/8efcf5bd/hadoop-hdfs-project/hadoop-hdfs/src/main/resources/hdfs-default.xml ---------------------------------------------------------------------- diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/resources/hdfs-default.xml b/hadoop-hdfs-project/hadoop-hdfs/src/main/resources/hdfs-default.xml index 3f4d771..b315f61 100644 --- a/hadoop-hdfs-project/hadoop-hdfs/src/main/resources/hdfs-default.xml +++ b/hadoop-hdfs-project/hadoop-hdfs/src/main/resources/hdfs-default.xml @@ -2054,7 +2054,7 @@ <value>256</value> <description> The DFSClient maintains a cache of recently opened file descriptors. - This parameter controls the size of that cache. + This parameter controls the maximum number of file descriptors in the cache. Setting this higher will use more file descriptors, but potentially provide better performance on workloads involving lots of seeks.
