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From Enis Söztutar <enis....@gmail.com>
Subject Re: periodicFlusher get stuck
Date Tue, 24 Feb 2015 18:49:26 GMT
Yes, this looks like HBASE-10499, but without more logs from the region
server it is hard to tell.

<hdp_specific>
The next version of HDP-2.1 is already scheduled to contain HBASE-10499. If
you want, we can continue at the HDP forums.

Enis

On Tue, Feb 24, 2015 at 10:38 AM, Brian Jeltema <
brian.jeltema@digitalenvoy.net> wrote:

>
> > What vendor/version/release corresponds with version
> > "0.98.0.2.1.2.1-471-hadoop2" ? I've not seen that before.
>
> That’s what Ambari 1.6.0 installed when we selected HDP 2.1 (if memory
> serves).
>
> >
> > We did recently analyze and fix an issue involving the flush queue, see
> > HBASE-10499 (https://issues.apache.org/jira/browse/HBASE-10499). This
> was
> > released in 0.98.10. I'm not definitively saying this is your issue but
> do
> > recommend an upgrade to the the current Apache HBase 0.98 release, which
> is
> > 0.98.10.1, or contact your vendor.
>
> Looks promising. Thanks.
>
> >
> >
> >
> > On Tue, Feb 24, 2015 at 8:15 AM, Brian Jeltema <
> > brian.jeltema@digitalenvoy.net> wrote:
> >
> >> I’m seeing occasional HBase log output similar to the output shown
> below.
> >> It appears there is a request to flush a region, repeated every 10
> >> seconds, that apparently is never being performed. It’s causing MR jobs
> to
> >> timeout because they cannot write to this region. Is this a known
> problem?
> >>
> >> hbase version 0.98.0.2.1.2.1-471-hadoop2
> >> hadoop version 2.4.0.2.1.2.1-471
> >>
> >>
> >> 2015-02-23 14:51:47,612 INFO  [regionserver60020.periodicFlusher]
> >> regionserver.HRegionServer: regionserver60020.periodicFlusher requesting
> >> flush for region
> >> Host,\x00_m\xB8\x06,1415044750009.6ec50faa43a312cd6465d991e5984ec6.
> after a
> >> delay of 13758
> >> 2015-02-23 14:51:57,611 INFO  [regionserver60020.periodicFlusher]
> >> regionserver.HRegionServer: regionserver60020.periodicFlusher requesting
> >> flush for region
> >> Host,\x00_m\xB8\x06,1415044750009.6ec50faa43a312cd6465d991e5984ec6.
> after a
> >> delay of 18080
> >> 2015-02-23 14:52:07,611 INFO  [regionserver60020.periodicFlusher]
> >> regionserver.HRegionServer: regionserver60020.periodicFlusher requesting
> >> flush for region
> >> Host,\x00_m\xB8\x06,1415044750009.6ec50faa43a312cd6465d991e5984ec6.
> after a
> >> delay of 17701
> >> 2015-02-23 14:52:17,612 INFO  [regionserver60020.periodicFlusher]
> >> regionserver.HRegionServer: regionserver60020.periodicFlusher requesting
> >> flush for region
> >> Host,\x00_m\xB8\x06,1415044750009.6ec50faa43a312cd6465d991e5984ec6.
> after a
> >> delay of 19090
> >> 2015-02-23 14:52:27,616 INFO  [regionserver60020.periodicFlusher]
> >> regionserver.HRegionServer: regionserver60020.periodicFlusher requesting
> >> flush for region
> >> Host,\x00_m\xB8\x06,1415044750009.6ec50faa43a312cd6465d991e5984ec6.
> after a
> >> delay of 4042
> >> 2015-02-23 14:52:37,615 INFO  [regionserver60020.periodicFlusher]
> >> regionserver.HRegionServer: regionserver60020.periodicFlusher requesting
> >> flush for region
> >> Host,\x00_m\xB8\x06,1415044750009.6ec50faa43a312cd6465d991e5984ec6.
> after a
> >> delay of 12968
> >> 2015-02-23 18:12:03,307 INFO  [regionserver60020.periodicFlusher]
> >> regionserver.HRegionServer: regionserver60020.periodicFlusher requesting
> >> flush for region
> >> Host,\x00_m\xB8\x06,1424724136146.48d4d3fa0e02a97a8a1d9b85d5cf0162.
> after a
> >> delay of 10482
> >> 2015-02-23 18:12:13,308 INFO  [regionserver60020.periodicFlusher]
> >> regionserver.HRegionServer: regionserver60020.periodicFlusher requesting
> >> flush for region
> >> Host,\x00_m\xB8\x06,1424724136146.48d4d3fa0e02a97a8a1d9b85d5cf0162.
> after a
> >> delay of 14829
> >> 2015-02-23 19:15:13,330 INFO  [regionserver60020.periodicFlusher]
> >> regionserver.HRegionServer: regionserver60020.periodicFlusher requesting
> >> flush for region
> >> Host,\x00_m\xB8\x06,1424724136146.48d4d3fa0e02a97a8a1d9b85d5cf0162.
> after a
> >> delay of 22888
> >> 2015-02-23 19:15:23,329 INFO  [regionserver60020.periodicFlusher]
> >> regionserver.HRegionServer: regionserver60020.periodicFlusher requesting
> >> flush for region
> >> Host,\x00_m\xB8\x06,1424724136146.48d4d3fa0e02a97a8a1d9b85d5cf0162.
> after a
> >> delay of 21081
> >> 2015-02-23 19:15:33,329 INFO  [regionserver60020.periodicFlusher]
> >> regionserver.HRegionServer: regionserver60020.periodicFlusher requesting
> >> flush for region
> >> Host,\x00_m\xB8\x06,1424724136146.48d4d3fa0e02a97a8a1d9b85d5cf0162.
> after a
> >> delay of 6387
> >> 2015-02-23 20:50:23,368 INFO  [regionserver60020.periodicFlusher]
> >> regionserver.HRegionServer: regionserver60020.periodicFlusher requesting
> >> flush for region
> >> Host,\x00_m\xB8\x06,1424724136146.48d4d3fa0e02a97a8a1d9b85d5cf0162.
> after a
> >> delay of 8828
> >>
> >>
> >
> >
> > --
> > Best regards,
> >
> >   - Andy
> >
> > Problems worthy of attack prove their worth by hitting back. - Piet Hein
> > (via Tom White)
>
>

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