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https://issues.apache.org/jira/browse/HDFS-10549?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yiqun Lin updated HDFS-10549:
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Attachment: HDFS-10549.002.patch
> Memory leak if exception happens when closing files being written
> -----------------------------------------------------------------
>
> Key: HDFS-10549
> URL: https://issues.apache.org/jira/browse/HDFS-10549
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: hdfs-client
> Affects Versions: 2.7.1
> Reporter: Yiqun Lin
> Assignee: Yiqun Lin
> Attachments: HDFS-10549.001.patch, HDFS-10549.002.patch
>
>
> As HADOOP-13264 memtioned, the code dfsClient.endFileLease(fileId) in
> {{DFSOutputStream}} will not be executed when the IOException happened in
> {{closeImpl()}}.
> {code}
> public void close() throws IOException {
> synchronized (this) {
> try (TraceScope ignored =
> dfsClient.newPathTraceScope("DFSOutputStream#close", src)) {
> closeImpl();
> }
> }
> dfsClient.endFileLease(fileId);
> }
> }
> {code}
> This will cause that the files not be closed in {{DFSClient}} and finally
> lead to the memory leak. In {{DFSStripedOutputStream}}, it existed the same
> problem.
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