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HDFS-8633. Fix setting of dfs.datanode.readahead.bytes in hdfs-default.xml to match DFSConfigKeys. Contributed by Ray Chiang. 

(cherry picked from commit b42f1ec13d)
This commit is contained in:
Yongjun Zhang 2015-06-19 09:47:31 -07:00
parent e5f9703419
commit 8c03a079df
2 changed files with 4 additions and 1 deletions
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3
hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
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@ -137,6 +137,9 @@ Release 2.7.1 - UNRELEASED
HDFS-4660. Block corruption can happen during pipeline recovery (kihwal) HDFS-4660. Block corruption can happen during pipeline recovery (kihwal)
HDFS-8633. Fix setting of dfs.datanode.readahead.bytes in hdfs-default.xml
to match DFSConfigKeys. (Ray Chiang via Yongjun Zhang)
Release 2.7.0 - 2015-04-20 Release 2.7.0 - 2015-04-20
INCOMPATIBLE CHANGES INCOMPATIBLE CHANGES

2
hadoop-hdfs-project/hadoop-hdfs/src/main/resources/hdfs-default.xml
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@ -1044,7 +1044,7 @@
<property> <property>
<name>dfs.datanode.readahead.bytes</name> <name>dfs.datanode.readahead.bytes</name>
<value>4193404</value> <value>4194304</value>
<description> <description>
While reading block files, if the Hadoop native libraries are available, While reading block files, if the Hadoop native libraries are available,
the datanode can use the posix_fadvise system call to explicitly the datanode can use the posix_fadvise system call to explicitly