线上一个job出错,报错信息如下:
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Diagnostic Messages for this Task:
Error : java.io.IOException: java.io.EOFException: Unexpected end of input stream at org.apache.hadoop.hive.io.HiveIOExceptionHandlerChain.handleRecordReaderNextException(HiveIOExceptionHandlerChain.java: 121 )
at org.apache.hadoop.hive.io.HiveIOExceptionHandlerUtil.handleRecordReaderNextException(HiveIOExceptionHandlerUtil.java: 77 )
at org.apache.hadoop.hive.ql.io.HiveContextAwareRecordReader.doNext(HiveContextAwareRecordReader.java: 276 )
at org.apache.hadoop.hive.ql.io.HiveRecordReader.doNext(HiveRecordReader.java: 79 )
at org.apache.hadoop.hive.ql.io.HiveRecordReader.doNext(HiveRecordReader.java: 33 )
at org.apache.hadoop.hive.ql.io.HiveContextAwareRecordReader.next(HiveContextAwareRecordReader.java: 108 )
at org.apache.hadoop.mapred.MapTask$TrackedRecordReader.moveToNext(MapTask.java: 196 )
at org.apache.hadoop.mapred.MapTask$TrackedRecordReader.next(MapTask.java: 182 )
at org.apache.hadoop.mapred.MapRunner.run(MapRunner.java: 52 )
at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java: 428 )
at org.apache.hadoop.mapred.MapTask.run(MapTask.java: 340 )
at org.apache.hadoop.mapred.YarnChild$ 2 .run(YarnChild.java: 160 )
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java: 396 )
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java: 1438 )
at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java: 155 )
Caused by: java.io.EOFException: Unexpected end of input stream at org.apache.hadoop.io.compress.DecompressorStream.decompress(DecompressorStream.java: 143 )
at org.apache.hadoop.io.compress.DecompressorStream.read(DecompressorStream.java: 83 )
at java.io.InputStream.read(InputStream.java: 82 )
at org.apache.hadoop.util.LineReader.readDefaultLine(LineReader.java: 209 )
at org.apache.hadoop.util.LineReader.readLine(LineReader.java: 173 )
at org.apache.hadoop.mapred.LineRecordReader.next(LineRecordReader.java: 206 )
at org.apache.hadoop.mapred.LineRecordReader.next(LineRecordReader.java: 45 )
at org.apache.hadoop.hive.ql.io.HiveContextAwareRecordReader.doNext(HiveContextAwareRecordReader.java: 274 )
... 13 more
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从报错信息来看,是和io读取有关系的,即在map阶段,数据读取出错导致。
通过explain extended查看读取的文件,因为是text的gz文件,使用zcat进行测试,最终定位到是由于gz文件异常导致。将有问题的数据删除后job恢复。
本文转自菜菜光 51CTO博客,原文链接:http://blog.51cto.com/caiguangguang/1436077,如需转载请自行联系原作者