[jira] [Commented] (CASSANDRA-7145) FileNotFoundException during compaction

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

    [ https://issues.apache.org/jira/browse/CASSANDRA-7145?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14086556#comment-14086556 ] 

Maxim Zakharenkov commented on CASSANDRA-7145:
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Today I had same problem on my local machine with one cassandra node, default configuration (2.0.8 and 2.0.9 versions). It was quite easily repeatable. I just execute quite heavy benchmark which writes new data as fast as it can into a single table. When it is running, execute "nodetool compact" for that table. After some 2 or 3 attempts normally you will get the issue.

> FileNotFoundException during compaction
> ---------------------------------------
>
>                 Key: CASSANDRA-7145
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-7145
>             Project: Cassandra
>          Issue Type: Bug
>         Environment: CentOS 6.3, Datastax Enterprise 4.0.1 (Cassandra 2.0.5), Java 1.7.0_55
>            Reporter: PJ
>         Attachments: compaction - FileNotFoundException.txt, repair - RuntimeException.txt, startup - AssertionError.txt
>
>
> I can't finish any compaction because my nodes always throw a "FileNotFoundException". I've already tried the following but nothing helped:
> 1. nodetool flush
> 2. nodetool repair (ends with RuntimeException; see attachment)
> 3. node restart (via dse cassandra-stop)
> Whenever I restart the nodes, another type of exception is logged (see attachment) somewhere near the end of startup process. This particular exception doesn't seem to be critical because the nodes still manage to finish the startup and become online.
> I don't have specific steps to reproduce the problem that I'm experiencing with compaction and repair. I'm in the middle of migrating 4.8 billion rows from MySQL via SSTableLoader. 
> Some things that may or may not be relevant:
> 1. I didn't drop and recreate the keyspace (so probably not related to CASSANDRA-4857)
> 2. I do the bulk-loading in batches of 1 to 20 millions rows. When a batch reaches 100% total progress (i.e. starts to build secondary index), I kill the sstableloader process and cancel the index build
> 3. I restart the nodes occasionally. It's possible that there is an on-going compaction during one of those restarts.
> Related StackOverflow question (mine): http://stackoverflow.com/questions/23435847/filenotfoundexception-during-compaction



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