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https://issues.apache.org/jira/browse/HADOOP-6460?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Suresh Srinivas updated HADOOP-6460:
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Attachment: hadoop-6460.patch
The attached patch:
# Introduces shrinkable byte array stream to be used by the handler for
serializing response. The underlying byte array in the stream is discarded when
the array exceeds the maximum size (1MB).
# Added a log to print the RPC call for which the response size exceeded the
max size.
> Namenode runs of out of memory due to memory leak in ipc Server
> ---------------------------------------------------------------
>
> Key: HADOOP-6460
> URL: https://issues.apache.org/jira/browse/HADOOP-6460
> Project: Hadoop Common
> Issue Type: Bug
> Affects Versions: 0.20.1, 0.21.0, 0.22.0
> Reporter: Suresh Srinivas
> Assignee: Suresh Srinivas
> Priority: Blocker
> Fix For: 0.20.2, 0.21.0, 0.22.0
>
> Attachments: hadoop-6460.patch
>
>
> Namenode heap usage grows disproportional to the number objects supports
> (files, directories and blocks). Based on heap dump analysis, this is due to
> large growth in ByteArrayOutputStream allocated in
> o.a.h.ipc.Server.Handler.run().
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