[jira] [Issue Comment Deleted] (CASSANDRA-6283) Windows 7 data files keept open / can't be deleted after compaction.

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

     [ https://issues.apache.org/jira/browse/CASSANDRA-6283?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Brandon Williams updated CASSANDRA-6283:
----------------------------------------

    Comment: was deleted

(was: I am out of the office from Tuesday Jan 28th to Wednesday Feb 19th.
For Hector subjects, please contact Maurice MILLS and Marc AUBRY.
For Ted2, Frederic WARMAN and TED2DEV.
For Titan, Marc AURY and EQD PRS DEV.


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> Windows 7 data files keept open / can't be deleted after compaction.
> --------------------------------------------------------------------
>
>                 Key: CASSANDRA-6283
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-6283
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>         Environment: Windows 7 (32) / Java 1.7.0.45
>            Reporter: Andreas Schnitzerling
>            Assignee: Joshua McKenzie
>              Labels: compaction
>             Fix For: 1.2.15
>
>         Attachments: leakdetect.patch, screenshot-1.jpg, system.log
>
>
> Files cannot be deleted, patch CASSANDRA-5383 (Win7 deleting problem) doesn't help on Win-7 on Cassandra 2.0.2. Even 2.1 Snapshot is not running. The cause is: Opened file handles seem to be lost and not closed properly. Win 7 blames, that another process is still using the file (but its obviously cassandra). Only restart of the server makes the files deleted. But after heavy using (changes) of tables, there are about 24K files in the data folder (instead of 35 after every restart) and Cassandra crashes. I experiminted and I found out, that a finalizer fixes the problem. So after GC the files will be deleted (not optimal, but working fine). It runs now 2 days continously without problem. Possible fix/test:
> I wrote the following finalizer at the end of class org.apache.cassandra.io.util.RandomAccessReader:
> {code:title=RandomAccessReader.java|borderStyle=solid}
> @Override
> protected void finalize() throws Throwable {
> 	deallocate();
> 	super.finalize();
> }
> {code}
> Can somebody test / develop / patch it? Thx.



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