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From Hari Sreekumar <hsreeku...@clickable.com>
Subject Trying to contact region "Some region"
Date Tue, 22 Feb 2011 14:27:53 GMT
What does this exception signify:

org.apache.hadoop.hbase.client.RetriesExhaustedException: Trying to contact
region server Some server, retryOnlyOne=true, index=0, islastrow=false,
tries=9, numtries=10, i=0, listsize=405,
region=NwKeywordTest,20927_57901_277247_8728141,1298383184948 for region
KeywordTest,20927_57901_277247_8728141,1298383184948, row
'20927_57902_277417_8744379', but failed after 10 attempts.
Exceptions:

        at
org.apache.hadoop.hbase.client.HConnectionManager$TableServers$Batch.process(HConnectionManager.java:1157)
        at
org.apache.hadoop.hbase.client.HConnectionManager$TableServers.processBatchOfRows(HConnectionManager.java:1238)
        at
org.apache.hadoop.hbase.client.HTable.flushCommits(HTable.java:666)
        at org.apache.hadoop.hbase.client.HTable.put(HTable.java:510)
        at
org.apache.hadoop.hbase.mapreduce.TableOutputFormat$TableRecordWriter.write(TableOutputFormat.java:94)
        at
org.apache.hadoop.hbase.mapreduce.TableOutputFormat$TableRecordWriter.write(TableOutputFormat.java:55)
        at
org.apache.hadoop.mapred.MapTask$NewDirectOutputCollector.write(MapTask.java:498)
        at
org.apache.hadoop.mapreduce.TaskInputOutputContext.write(TaskInputOutputContext.java:80)
        at
com.clickable.dataengine.hbase.upload.BulkUploadtoHBase$BulkUploadMapper.map(Unknown
Source)
        at
com.clickable.dataengine.hbase.upload.BulkUploadtoHBase$BulkUploadMapper.map(Unknown
Source)
        at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:144)
        at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:621)
        at org.apache.hadoop.mapred.MapTask.run(MapTask.java:305)
        at org.apache.hadoop.mapred.Child.main(Child.java:170)

How can I avoid it?

Thanks,
Hari

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