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https://issues.apache.org/jira/browse/HADOOP-4797?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Raghu Angadi updated HADOOP-4797:
---------------------------------
Description:
RPC server unwittingly can soft-leak direct buffers. One observed case is that
one of the namenodes at Yahoo took 40GB of virtual memory though it was
configured for 24GB memory. Most of the memory outside Java heap expected to be
direct buffers. This shown to be because of how RPC server reads and writes
serialized data. The cause and proposed fix are in following comment.
was:
RPC server unwittingly can soft-leak direct buffers. One observed case is that
one of the namenodes at Yahoo took 40GB of virtual memory though it was
configured for 24GB memory. Most of the memory outside Java heap expected to be
direct buffers. This shown to be because of how RPC server reads and writes
serialized data. The cause and proposed fix are in following comment.
Fix Version/s: 0.20.0
0.19.1
0.18.3
> RPC Server can leave a lot of direct buffers
> ---------------------------------------------
>
> Key: HADOOP-4797
> URL: https://issues.apache.org/jira/browse/HADOOP-4797
> Project: Hadoop Core
> Issue Type: Bug
> Components: ipc
> Affects Versions: 0.17.0
> Reporter: Raghu Angadi
> Assignee: Raghu Angadi
> Fix For: 0.18.3, 0.19.1, 0.20.0
>
> Attachments: HADOOP-4797-branch-18.patch,
> HADOOP-4797-branch-18.patch, HADOOP-4797-branch-18.patch, HADOOP-4797.patch
>
>
> RPC server unwittingly can soft-leak direct buffers. One observed case is
> that one of the namenodes at Yahoo took 40GB of virtual memory though it was
> configured for 24GB memory. Most of the memory outside Java heap expected to
> be direct buffers. This shown to be because of how RPC server reads and
> writes serialized data. The cause and proposed fix are in following comment.
>
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