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From "Zhihong Yu (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-5387) Reuse compression streams in HFileBlock.Writer
Date Sat, 11 Feb 2012 03:05:04 GMT

     [ https://issues.apache.org/jira/browse/HBASE-5387?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Zhihong Yu updated HBASE-5387:
------------------------------

    Status: Patch Available  (was: Open)
    
> Reuse compression streams in HFileBlock.Writer
> ----------------------------------------------
>
>                 Key: HBASE-5387
>                 URL: https://issues.apache.org/jira/browse/HBASE-5387
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Mikhail Bautin
>         Attachments: Fix-deflater-leak-2012-02-10_18_48_45.patch
>
>
> We need to to reuse compression streams in HFileBlock.Writer instead of allocating them
every time. The motivation is that when using Java's built-in implementation of Gzip, we allocate
a new GZIPOutputStream object and an associated native data structure any time. This is one
suspected cause of recent TestHFileBlock failures on Hadoop QA: https://builds.apache.org/job/HBase-TRUNK/2658/testReport/org.apache.hadoop.hbase.io.hfile/TestHFileBlock/testPreviousOffset_1_/.

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