[jira] Commented: (SOLR-173) "too many open files" with posting to update handler

["Bertrand Delacretaz (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SOLR-173?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12475664 ] 

Bertrand Delacretaz commented on SOLR-173:
------------------------------------------

After making the change shown above in solrconfig.xml, a commit is enough to make the number of open file handles grow:

  curl http://localhost:8983/solr/update --data-binary '<commit/>'  -H 'Content-type:text/xml; charset=utf-8'

lsof shows that many of these file handles point to files in data/index, which have been deleted during the commit: 

  lsof -p 9563 | grep data/index | wc -l           (where 9563 is my solr's process ID)

shows 398 file handles after a few commits, although my data/index dir contains only 47 files.

So it looks like something is keeping useless open handles to "old" index files after a commit.



> "too many open files" with posting to update handler
> ----------------------------------------------------
>
>                 Key: SOLR-173
>                 URL: https://issues.apache.org/jira/browse/SOLR-173
>             Project: Solr
>          Issue Type: Bug
>          Components: update
>    Affects Versions: 1.2
>            Reporter: Ryan McKinley
>         Attachments: SOLR-173-open-files-bug.patch
>
>
> From brian:
> 1) Download trunk/nightly
> 2) Change line 347 of example/solr/conf/solrconfig.xml to   <requestHandler name="/update" class="solr.XmlUpdateRequestHandler">
> 3) java -jar start.jar...
> 3) Run post.sh a bunch of times on the same xml file... (in a shell script or whatever)
> 4) After a few seconds/minutes jetty will crash with "too many open files"
> - - - - -
> all you've got to do is
> apache-solr-nightly/example/exampledocs ryan$ while [ 0 -lt 1 ]; do ./post.sh hd.xml; done
> with the request handler pointing to /update. Use
> # lsof | grep solr | wc -l
> to watch the fdescs fly.

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