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From Brian Jeltema <brian.jelt...@digitalenvoy.net>
Subject Re: periodicFlusher get stuck
Date Tue, 24 Feb 2015 18:38:19 GMT

> 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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