[jira] [Commented] (NUTCH-1935) too many open files

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

    [ https://issues.apache.org/jira/browse/NUTCH-1935?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14306165#comment-14306165 ] 

stack commented on NUTCH-1935:
------------------------------

What did you have ulimit set to?  See 'Limits on Number of Files and Processes (ulimit)' in here: http://hbase.apache.org/book.html

> too many open files
> -------------------
>
>                 Key: NUTCH-1935
>                 URL: https://issues.apache.org/jira/browse/NUTCH-1935
>             Project: Nutch
>          Issue Type: Bug
>    Affects Versions: 2.2
>            Reporter: yuanyun.cn
>            Priority: Minor
>              Labels: leak
>
> This is to track the " too many open files" issue from http://lucene.472066.n3.nabble.com/Cannot-run-program-quot-chmod-quot-too-many-open-files-td4109753.html
> Recently I also hit this too many open files issues, after run our crawler application for about 2-5 months, it will fail " too many open files" errors.
> We have to restart nutch server and hbase.
> Nutch Server opens 4249 files
> lsof -p 17849 | wc -l
> 4249
> There are a lot of pipe, sock, and connections to hbase.
> cat sorted | grep pipe | wc -l
> 1624
> cat sorted | grep 2181 | wc -l 
> 813
> 907 java    17849 user 1465u  sock                0,7      0t0 65043894 can't identify protocol
> 1843 java    17849 user 2744u  IPv6           76971706      0t0      TCP localhost:35073->localhost:2181 (ESTABLISHED) // connect to hbase
> cat sorted | grep anon_inode | wc -l
> 812
> Thanks...



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