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From "Andrew Purtell (JIRA)" <j...@apache.org>
Subject [jira] Created: (HBASE-1752) when a regionserver shuts down writes in progress are no retried by the client
Date Fri, 07 Aug 2009 02:41:16 GMT
when a regionserver shuts down writes in progress are no retried by the client
------------------------------------------------------------------------------

                 Key: HBASE-1752
                 URL: https://issues.apache.org/jira/browse/HBASE-1752
             Project: Hadoop HBase
          Issue Type: Bug
            Reporter: Andrew Purtell
             Fix For: 0.20.0


When a regionserver aborts, there is a window where clients are continuing to try to write
to it, but the writes are failing:

{noformat}
Aug 4, 2009 6:47:25 AM net.iridiant.heritrix.writer.HBaseWriterProcessor innerProcessResult
SEVERE: Failed write of Record: http://www.rdc.udel.edu/reports/development/profdev.pdf (in
thread 'ToeThread #3: http://www.rdc.udel.edu/reports/development/profdev.pdf'; in processor
'Archiver')
java.io.IOException: org.apache.hadoop.hbase.client.RetriesExhaustedException: Trying to contact
region server 172.20.3.229:60020 for region content,23d6b92bc7eb100fc1294e6b124b7e75,1249198098627,
row '23d6b92bc7eb100fc1294e6b124b7e75', but failed after 10 attempts.
Exceptions:
java.net.ConnectException: Call to /172.20.3.229:60020 failed on connection exception: java.net.ConnectException:
Connection refused
java.net.ConnectException: Call to /172.20.3.229:60020 failed on connection exception: java.net.ConnectException:
Connection refused
java.net.ConnectException: Call to /172.20.3.229:60020 failed on connection exception: java.net.ConnectException:
Connection refused
java.net.ConnectException: Call to /172.20.3.229:60020 failed on connection exception: java.net.ConnectException:
Connection refused
java.net.ConnectException: Call to /172.20.3.229:60020 failed on connection exception: java.net.ConnectException:
Connection refused
java.net.ConnectException: Call to /172.20.3.229:60020 failed on connection exception: java.net.ConnectException:
Connection refused
java.net.ConnectException: Call to /172.20.3.229:60020 failed on connection exception: java.net.ConnectException:
Connection refused
java.net.ConnectException: Call to /172.20.3.229:60020 failed on connection exception: java.net.ConnectException:
Connection refused
java.net.ConnectException: Call to /172.20.3.229:60020 failed on connection exception: java.net.ConnectException:
Connection refused
java.net.ConnectException: Call to /172.20.3.229:60020 failed on connection exception: java.net.ConnectException:
Connection refused
	at net.iridiant.heritrix.writer.HBaseWriter.write(Unknown Source)
	at net.iridiant.heritrix.writer.HBaseWriterProcessor.write(Unknown Source)
	at net.iridiant.heritrix.writer.HBaseWriterProcessor.innerProcessResult(Unknown Source)
	at org.archive.modules.Processor.process(Unknown Source)
	at org.archive.crawler.framework.ToeThread.processCrawlUri(Unknown Source)
	at org.archive.crawler.framework.ToeThread.run(Unknown Source)
{noformat}

The client does not retry, so the data is lost. Maybe we can get this in for RC2?

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