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From "Chetan Mehrotra (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (OAK-2719) Warn about local copy size different than remote copy in oak-lucene with copyOnRead enabled
Date Wed, 22 Jul 2015 11:56:04 GMT

     [ https://issues.apache.org/jira/browse/OAK-2719?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Chetan Mehrotra updated OAK-2719:
---------------------------------
    Fix Version/s:     (was: 1.3.4)
                   1.3.6

> Warn about local copy size different than remote copy in oak-lucene with copyOnRead enabled
> -------------------------------------------------------------------------------------------
>
>                 Key: OAK-2719
>                 URL: https://issues.apache.org/jira/browse/OAK-2719
>             Project: Jackrabbit Oak
>          Issue Type: Bug
>          Components: lucene
>            Reporter: Chetan Mehrotra
>            Assignee: Chetan Mehrotra
>            Priority: Minor
>              Labels: resilience
>             Fix For: 1.3.6
>
>
> At times following warning is seen in logs
> {noformat}
> 31.03.2015 14:04:57.610 *WARN* [pool-6-thread-7] org.apache.jackrabbit.oak.plugins.index.lucene.IndexCopier
Found local copy for _0.cfs in NIOFSDirectory@/path/to/index/e5a943cdec3000bd8ce54924fd2070ab5d1d35b9ecf530963a3583d43bf28293/1
lockFactory=NativeFSLockFactory@/path/to/index/e5a943cdec3000bd8ce54924fd2070ab5d1d35b9ecf530963a3583d43bf28293/1
but size of local 1040384 differs from remote 1958385. Content would be read from remote file
only
> {noformat}
> The file length check provides a weak check around index file consistency. In some cases
this warning is misleading. For e.g. 
> # Index version Rev1 - Task submitted to copy index file F1 
> # Index updated to Rev2 - Directory bound to Rev1 is closed
> # Read is performed with Rev2 for F1 - Here as the file would be locally created the
size would be different as the copying is in progress
> In such a case the logic should ensure that once copy is done the local file gets used



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