Hadoop错误笔记

小咪咪 2022-07-15 05:43 172阅读 0赞

1： 错误一：重启agent

unknow

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2：export HADOOP\_DATANODE\_OPTS="-Xmx26214m -Xms256m -Dcom.sun.management.jmxremote $HADOOP\_DATANODE\_OPTS"  
  
  
  
  
  
  
2016-09-07 17:54:32,496 INFO \[fetcher\#2\] org.apache.hadoop.mapreduce.task.reduce.InMemoryMapOutput: Read 19171302 bytes from map-output for attempt\_1472800383680\_0148\_m\_000034\_0  
2016-09-07 17:54:32,497 INFO \[fetcher\#2\] org.apache.hadoop.mapreduce.task.reduce.MergeManagerImpl: closeInMemoryFile -> map-output of size: 19171302, inMemoryMapOutputs.size() -> 2, commitMemory -> 631818614, usedMemory ->2571345835  
2016-09-07 17:54:33,292 INFO \[fetcher\#2\] org.apache.hadoop.mapreduce.task.reduce.ShuffleSchedulerImpl: hadoopserver05:13562 freed by fetcher\#2 in 1543ms  
2016-09-07 17:54:33,292 INFO \[fetcher\#4\] org.apache.hadoop.mapreduce.task.reduce.ShuffleSchedulerImpl: Assigning hadoopserver05:13562 with 2 to fetcher\#4  
2016-09-07 17:54:33,292 INFO \[fetcher\#4\] org.apache.hadoop.mapreduce.task.reduce.ShuffleSchedulerImpl: assigned 2 of 2 to hadoopserver05:13562 to fetcher\#4  
2016-09-07 17:54:33,294 WARN \[main\] org.apache.hadoop.security.UserGroupInformation: PriviledgedActionException as:root (auth:SIMPLE) cause:org.apache.hadoop.mapreduce.task.reduce.Shuffle$ShuffleError: error in shuffle in fetcher\#2  
2016-09-07 17:54:33,295 WARN \[main\] org.apache.hadoop.mapred.YarnChild: Exception running child : org.apache.hadoop.mapreduce.task.reduce.Shuffle$ShuffleError: error in shuffle in fetcher\#2  
at org.apache.hadoop.mapreduce.task.reduce.Shuffle.run(Shuffle.java:134)  
at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:376)  
at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:163)  
at java.security.AccessController.doPrivileged(Native Method)  
at javax.security.auth.Subject.doAs(Subject.java:422)  
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1671)  
at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:158)  
Caused by: java.lang.OutOfMemoryError: Java heap space  
at org.apache.hadoop.io.BoundedByteArrayOutputStream.<init>(BoundedByteArrayOutputStream.java:56)  
at org.apache.hadoop.io.BoundedByteArrayOutputStream.<init>(BoundedByteArrayOutputStream.java:46)  
at org.apache.hadoop.mapreduce.task.reduce.InMemoryMapOutput.<init>(InMemoryMapOutput.java:63)  
at org.apache.hadoop.mapreduce.task.reduce.MergeManagerImpl.unconditionalReserve(MergeManagerImpl.java:305)  
at org.apache.hadoop.mapreduce.task.reduce.MergeManagerImpl.reserve(MergeManagerImpl.java:295)  
at org.apache.hadoop.mapreduce.task.reduce.Fetcher.copyMapOutput(Fetcher.java:514)  
at org.apache.hadoop.mapreduce.task.reduce.Fetcher.copyFromHost(Fetcher.java:336)  
at org.apache.hadoop.mapreduce.task.reduce.Fetcher.run(Fetcher.java:193)

3：

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[Center]: /images/20220715/642cb102b3894614bd7b432e88a59205.png