Home | About | Sematext search-lucene.com search-hadoop.com
 Search Hadoop and all its subprojects:

Switch to Threaded View
Accumulo, mail # user - Bloom filter thread failure errors


Copy link to this message
-
Re: Bloom filter thread failure errors
Eric Newton 2013-11-19, 02:56
This is an educated guess...

When a process dies "gracefully" there's a shutdown hook that closes the
FileSystem.  That can result in messages like this.  It's likely there's an
error before this about a zookeeper session being lost, or a halt issued by
the master.  See if this tserver died shortly after this message. If so,
ignore the message.

-Eric

On Fri, Nov 15, 2013 at 4:31 PM, Terry P. <[EMAIL PROTECTED]> wrote:

> Greetings folks,
> In my Accumulo 1.4.2 cluster I am seeing ERRORS about bloom loader threads
> dying due to an rfile being closed.  I can't copy/paste the error as it's
> on an air-gapped system, but it starts with:
>
> ERROR Thread "bloom-loader-2147" died File
> /accumulo/tables/2/t-0000aa4/F0000q3g.rf is closed
>   java.lang.IllegalStateException: File
> /accumulo/tables/2/t-0000aa4/F0000q3g.rf is closed
>     at
> org.apache.accumulo.core.file.blockfile.impl.CacheableBlockFile$Reader.getBCFile(CacheableBlockFile.java:244)
>     at
> org.apache.accumulo.core.file.blockfile.impl.CacheableBlockFile$Reader.access$000(CacheableBlockFile.java:142)
> (10 more java files ... ends with java.lang.Thread.run(UnknownSource) )
>
> No real rhyme or reason as to when they occur; we are predominantly ingest
> heavy with light reads by rowkey with ~10 entries per rowkey.  I don't
> really know if client programs are getting errors when these occur or not.
>
> I didn't find any JIRAs related to these.  Should I be concerned about
> these?
>