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Posted to issues@hbase.apache.org by "stack (JIRA)" <ji...@apache.org> on 2012/11/29 21:06:58 UTC

[jira] [Updated] (HBASE-7239) Verify protobuf serialization is correctly chunking upon read to avoid direct memory OOMs

     [ https://issues.apache.org/jira/browse/HBASE-7239?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

stack updated HBASE-7239:
-------------------------

    Priority: Critical  (was: Major)
    
> Verify protobuf serialization is correctly chunking upon read to avoid direct memory OOMs
> -----------------------------------------------------------------------------------------
>
>                 Key: HBASE-7239
>                 URL: https://issues.apache.org/jira/browse/HBASE-7239
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: Lars Hofhansl
>            Priority: Critical
>             Fix For: 0.96.0
>
>
> Result.readFields() used to read from the input stream in 8k chunks to avoid OOM issues with direct memory.
> (Reading variable sized chunks into direct memory prevent the JVM from reusing the allocated direct memory and direct memory is only collected during full GCs)
> This is just to verify protobufs parseFrom type methods do the right thing as well so that we do not reintroduce this problem.

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