[ https://issues.apache.org/jira/browse/HBASE-14557?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14944562#comment-14944562 ]
ramkrishna.s.vasudevan commented on HBASE-14557: ------------------------------------------------ So is this the problem? {code} job.setMapOutputValueClass(KeyValue.class); {code} > MapReduce WALPlayer issue with NoTagsKeyValue > --------------------------------------------- > > Key: HBASE-14557 > URL: https://issues.apache.org/jira/browse/HBASE-14557 > Project: HBase > Issue Type: Bug > Affects Versions: 2.0.0 > Reporter: Jerry He > > Running MapReduce WALPlayer to convert WAL info HFiles: > {noformat} > 15/10/05 20:28:08 INFO mapred.JobClient: Task Id : > attempt_201508031611_0029_m_000000_0, Status : FAILED > java.io.IOException: Type mismatch in value from map: expected > org.apache.hadoop.hbase.KeyValue, recieved > org.apache.hadoop.hbase.NoTagsKeyValue > at > org.apache.hadoop.mapred.MapTask$MapOutputBuffer.collect(MapTask.java:997) > at > org.apache.hadoop.mapred.MapTask$NewOutputCollector.write(MapTask.java:689) > at > org.apache.hadoop.mapreduce.task.TaskInputOutputContextImpl.write(TaskInputOutputContextImpl.java:89) > at > org.apache.hadoop.mapreduce.lib.map.WrappedMapper$Context.write(WrappedMapper.java:112) > at > org.apache.hadoop.hbase.mapreduce.WALPlayer$WALKeyValueMapper.map(WALPlayer.java:111) > at > org.apache.hadoop.hbase.mapreduce.WALPlayer$WALKeyValueMapper.map(WALPlayer.java:96) > at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:140) > at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:751) > at org.apache.hadoop.mapred.MapTask.run(MapTask.java:368) > at org.apache.hadoop.mapred.Child$4.run(Child.java:255) > at > java.security.AccessController.doPrivileged(AccessController.java:369) > at javax.security.auth.Subject.doAs(Subject.java:572) > at > org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1502) > at org.apache.hadoop.mapred.Child.main(Child.java:249) > {noformat} -- This message was sent by Atlassian JIRA (v6.3.4#6332)