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From stack <st...@duboce.net>
Subject Re: HBase 0.19.0: Xcievers / shutdown / JVM GC settings
Date Thu, 26 Feb 2009 04:59:36 GMT
Jean-Adrien:

Thank you for the high-quality addition to the wiki troubleshooting page and
for the detail in hbase-1214. (I added a question there that you might have
some input on).

St.Ack

On Tue, Feb 24, 2009 at 4:39 AM, Jean-Adrien <adv1@jeanjean.ch> wrote:

>
> #3 I put the information in the Troubleshooting section. Do not hesitate to
> reformat.
> #2 And I created the jira https://issues.apache.org/jira/browse/HBASE-1214
>
> About HBASE-616, using the concurrent GC should help, the only problem is
> that the concurrent GC performs full GC sometimes, it is therefore not a
> solution and I don't think it should be the normal mode of HBase.
> Another idea (haven't tried it yet) is to have a larger part of the heap
> used for Eden space (short life objects), in order to avoid mid-living
> object to be promoted to the old space, and collected at full gc time.
> Anyway, if the heap almost fits in physical memory, all gc strategies
> should
> be quick.
>
> I'll continue to monitor the heap usage, and if I find something
> interesting, I post.
>
>
> stack-3 wrote:
> >
> > Thanks also for the considered message below J-A.  I echo J-D's
> suggestion
> > that the #3 note belongs on the troubleshooting page.  Your suggestion
> > would
> > help with, https://issues.apache.org/jira/browse/HBASE-616, IIUC?  If
> you
> > agree I can add it, no problem.  Will follow up on the other items in a
> > while.
> > St.Ack
> >
> >
> >
> >
>
> --
> View this message in context:
> http://www.nabble.com/HBase-0.19.0%3A-Xcievers---shutdown---JVM-GC-settings-tp22158436p22180687.html
> Sent from the HBase User mailing list archive at Nabble.com.
>
>

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