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MAPREDUCE-5601. ShuffleHandler fadvises file regions as DONTNEED even when fetch fails (Sandy Ryza) 

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1537856 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Sanford Ryza 2013-11-01 08:55:05 +00:00
parent ba85796267
commit d023d52062
3 changed files with 14 additions and 1 deletions
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3
hadoop-mapreduce-project/CHANGES.txt
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@ -34,6 +34,9 @@ Release 2.3.0 - UNRELEASED
MAPREDUCE-5487. In task processes, JobConf is unnecessarily loaded again MAPREDUCE-5487. In task processes, JobConf is unnecessarily loaded again
in Limits (Sandy Ryza) in Limits (Sandy Ryza)
MAPREDUCE-5601. ShuffleHandler fadvises file regions as DONTNEED even when
fetch fails (Sandy Ryza)
BUG FIXES BUG FIXES
MAPREDUCE-5316. job -list-attempt-ids command does not handle illegal MAPREDUCE-5316. job -list-attempt-ids command does not handle illegal

9
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-shuffle/src/main/java/org/apache/hadoop/mapred/FadvisedFileRegion.java
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@ -69,6 +69,14 @@ public class FadvisedFileRegion extends DefaultFileRegion {
if (readaheadRequest != null) { if (readaheadRequest != null) {
readaheadRequest.cancel(); readaheadRequest.cancel();
} }
super.releaseExternalResources();
}
/**
* Call when the transfer completes successfully so we can advise the OS that
* we don't need the region to be cached anymore.
*/
public void transferSuccessful() {
if (manageOsCache && getCount() > 0) { if (manageOsCache && getCount() > 0) {
try { try {
NativeIO.POSIX.posixFadviseIfPossible(identifier, NativeIO.POSIX.posixFadviseIfPossible(identifier,
@ -78,6 +86,5 @@ public class FadvisedFileRegion extends DefaultFileRegion {
LOG.warn("Failed to manage OS cache for " + identifier, t); LOG.warn("Failed to manage OS cache for " + identifier, t);
} }
} }
super.releaseExternalResources();
} }
} }

3
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-shuffle/src/main/java/org/apache/hadoop/mapred/ShuffleHandler.java
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@ -625,6 +625,9 @@ public class ShuffleHandler extends AuxiliaryService {
// attribute to appropriate spill output // attribute to appropriate spill output
@Override @Override
public void operationComplete(ChannelFuture future) { public void operationComplete(ChannelFuture future) {
if (future.isSuccess()) {
partition.transferSuccessful();
}
partition.releaseExternalResources(); partition.releaseExternalResources();
} }
}); });