[jira] [Commented] (KYLIN-912) $KYLIN_HOME/tomcat/temp folder takes much disk space after long run

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

    [ https://issues.apache.org/jira/browse/KYLIN-912?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14645529#comment-14645529 ] 

Shaofeng SHI commented on KYLIN-912:
------------------------------------

The .seq files were not deleted after the use; will call delete once it be uploaded to Kylin metadata store;

For the "kylin_job_meta*" folders, I checked the code, Kylin already registered to delete it on JVM shutdown (in org.apache.kylin.job.hadoop.AbstractHadoopJob):

{code}
        File tmp = File.createTempFile("kylin_job_meta", "");
        tmp.delete(); // we need a directory, so delete the file first

        File metaDir = new File(tmp, "meta");
        metaDir.mkdirs();
        metaDir.getParentFile().deleteOnExit();

{code}

But that did not work, as Kylin shutdown by "kill <pid>"; But File.deleteOnExit() "will be attempted only for normal termination of the virtual machine"; So, we either need change the file deletion way, either change the stop script.

> $KYLIN_HOME/tomcat/temp folder takes much disk space after long run
> -------------------------------------------------------------------
>
>                 Key: KYLIN-912
>                 URL: https://issues.apache.org/jira/browse/KYLIN-912
>             Project: Kylin
>          Issue Type: Bug
>          Components: General
>    Affects Versions: v0.8.1
>            Reporter: Shaofeng SHI
>            Assignee: Shaofeng SHI
>             Fix For: v0.8.1
>
>
> A lot of .seq files and "kylin_job_meta" directories were left in $KYLIN_HOME/tomcat/temp, need be dropped once build job finished;



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