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From "Colin Patrick McCabe (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-8965) Harden edit log reading code against out of memory errors
Date Fri, 28 Aug 2015 00:48:46 GMT

     [ https://issues.apache.org/jira/browse/HDFS-8965?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Colin Patrick McCabe updated HDFS-8965:
---------------------------------------
    Attachment: HDFS-8965.004.patch

> Harden edit log reading code against out of memory errors
> ---------------------------------------------------------
>
>                 Key: HDFS-8965
>                 URL: https://issues.apache.org/jira/browse/HDFS-8965
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>    Affects Versions: 2.0.0-alpha
>            Reporter: Colin Patrick McCabe
>            Assignee: Colin Patrick McCabe
>         Attachments: HDFS-8965.001.patch, HDFS-8965.002.patch, HDFS-8965.003.patch, HDFS-8965.004.patch
>
>
> We should harden the edit log reading code against out of memory errors.  Now that each
op has a length prefix and a checksum, we can validate the checksum before trying to load
the Op data.  This should avoid out of memory errors when trying to load garbage data as Op
data.



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