Repository: hadoop Updated Branches: refs/heads/branch-2.8 6af5255b0 -> afc76eb21
HDFS-9294. DFSClient deadlock when close file and failed to renew lease. Contributed by Brahma Reddy Battula Project: http://git-wip-us.apache.org/repos/asf/hadoop/repo Commit: http://git-wip-us.apache.org/repos/asf/hadoop/commit/afc76eb2 Tree: http://git-wip-us.apache.org/repos/asf/hadoop/tree/afc76eb2 Diff: http://git-wip-us.apache.org/repos/asf/hadoop/diff/afc76eb2 Branch: refs/heads/branch-2.8 Commit: afc76eb2187aa3f5fb7ab468a55c3a56c2c8becf Parents: 6af5255 Author: Tsz-Wo Nicholas Sze <[email protected]> Authored: Wed Dec 2 17:39:28 2015 -0800 Committer: Tsz-Wo Nicholas Sze <[email protected]> Committed: Thu Dec 3 11:35:29 2015 -0800 ---------------------------------------------------------------------- .../org/apache/hadoop/hdfs/DFSOutputStream.java | 28 ++++++++++++-------- hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt | 3 +++ 2 files changed, 20 insertions(+), 11 deletions(-) ---------------------------------------------------------------------- http://git-wip-us.apache.org/repos/asf/hadoop/blob/afc76eb2/hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/DFSOutputStream.java ---------------------------------------------------------------------- diff --git a/hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/DFSOutputStream.java b/hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/DFSOutputStream.java index f8e52b7..5878756 100755 --- a/hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/DFSOutputStream.java +++ b/hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/DFSOutputStream.java @@ -701,13 +701,17 @@ public class DFSOutputStream extends FSOutputSummer * Aborts this output stream and releases any system * resources associated with this stream. */ - synchronized void abort() throws IOException { - if (isClosed()) { - return; + void abort() throws IOException { + synchronized (this) { + if (isClosed()) { + return; + } + getStreamer().getLastException().set( + new IOException("Lease timeout of " + + (dfsClient.getConf().getHdfsTimeout() / 1000) + + " seconds expired.")); + closeThreads(true); } - getStreamer().getLastException().set(new IOException("Lease timeout of " - + (dfsClient.getConf().getHdfsTimeout() / 1000) + " seconds expired.")); - closeThreads(true); dfsClient.endFileLease(fileId); } @@ -740,11 +744,14 @@ public class DFSOutputStream extends FSOutputSummer * resources associated with this stream. */ @Override - public synchronized void close() throws IOException { - try (TraceScope ignored = - dfsClient.newPathTraceScope("DFSOutputStream#close", src)) { - closeImpl(); + public void close() throws IOException { + synchronized (this) { + try (TraceScope ignored = dfsClient.newPathTraceScope( + "DFSOutputStream#close", src)) { + closeImpl(); + } } + dfsClient.endFileLease(fileId); } protected synchronized void closeImpl() throws IOException { @@ -772,7 +779,6 @@ public class DFSOutputStream extends FSOutputSummer dfsClient.getTracer().newScope("completeFile")) { completeFile(lastBlock); } - dfsClient.endFileLease(fileId); } catch (ClosedChannelException ignored) { } finally { setClosed(); http://git-wip-us.apache.org/repos/asf/hadoop/blob/afc76eb2/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 0231f93..6951832 100644 --- a/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt +++ b/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt @@ -1658,6 +1658,9 @@ Release 2.7.2 - UNRELEASED HDFS-9426. Rollingupgrade finalization is not backward compatible (Kihwal Lee via vinayakumarb) + HDFS-9294. DFSClient deadlock when close file and failed to renew lease. + (Brahma Reddy Battula via szetszwo) + Release 2.7.1 - 2015-07-06 INCOMPATIBLE CHANGES
