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From "Scott Chen (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-4992) Use a UUID for HFileOutputFormat partition path name
Date Fri, 09 Dec 2011 17:11:39 GMT
Use a UUID for HFileOutputFormat partition path name

                 Key: HBASE-4992
                 URL: https://issues.apache.org/jira/browse/HBASE-4992
             Project: HBase
          Issue Type: Bug
          Components: mapreduce
            Reporter: Scott Chen
            Priority: Minor

HFileOutputFormat uses timestamps for the path name to avoid collision.
It is possible the path name still collide and causing MR job fails.

Caused by: java.io.IOException: File: hdfs://ubasedev001-snc3-dfs-nn.data.facebook.com:9000/user/hadoop/partitions_1316142976586#_\
partition.lst has changed on HDFS since job started
at org.apache.hadoop.filecache.DistributedCache.ifExistsAndFresh(DistributedCache.java:572)
at org.apache.hadoop.filecache.DistributedCache.checkCacheStatusValidity(DistributedCache.java:465)
at org.apache.hadoop.filecache.DistributedCache.getLocalCache(DistributedCache.java:230)
at org.apache.hadoop.mapred.TaskRunner.run(TaskRunner.java:208)

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