[jira] [Assigned] (OAK-5995) Lucene indexing with copyonread/write holding unexpectedly much files open

["Chetan Mehrotra (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/OAK-5995?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Chetan Mehrotra reassigned OAK-5995:
------------------------------------

    Assignee: Chetan Mehrotra

> Lucene indexing with copyonread/write holding unexpectedly much files open
> --------------------------------------------------------------------------
>
>                 Key: OAK-5995
>                 URL: https://issues.apache.org/jira/browse/OAK-5995
>             Project: Jackrabbit Oak
>          Issue Type: Bug
>          Components: lucene
>    Affects Versions: 1.4.1
>            Reporter: Dirk Rudolph
>            Assignee: Chetan Mehrotra
>         Attachments: lsofout2.txt
>
>
> We recently faced the issue that our Oak based enterprise content management system run into failures due to too much open files. Monitoring the lsof output we found out that most of the opened files of the process are the files within the configured localIndexDir of the LuceneIndexProviderService. 
> {code}
> enableCopyOnReadSupport="true"
> localIndexDir="tmp/index"
> enableCopyOnWriteSupport="true"
> {code}
> See attached the lsof output:
> {code}
> ~ wc -l lsofout2.txt
>    20388 lsofout2.txt
> ~ grep "tmp/index" lsofout2.txt | wc -l
>    13499
> {code}
> where more then 60% of open files are "tmp/index" ones as configured as {{localIndexDir}} shortly after a restart of the process.



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