Hive报错整理之Malformed ORC file 、Invalid postscript.

Caused by: java.io.IOException: Malformed ORC file

将本地文件的数据加载到hive的ORC格式表时,出现以下报错:

Diagnostic Messages for this Task: Error: java.io.IOException: java.lang.reflect.InvocationTargetException         at org.apache.hadoop.hive.io.HiveIOExceptionHandlerChain.handleRecordReaderCreationException(HiveIOExceptionHandlerChain.java:97)         at org.apache.hadoop.hive.io.HiveIOExceptionHandlerUtil.handleRecordReaderCreationException(HiveIOExceptionHandlerUtil.java:57)         at org.apache.hadoop.hive.shims.HadoopShimsSecure$CombineFileRecordReader.initNextRecordReader(HadoopShimsSecure.java:295)         at org.apache.hadoop.hive.shims.HadoopShimsSecure$CombineFileRecordReader.<init>(HadoopShimsSecure.java:242)         at org.apache.hadoop.hive.shims.HadoopShimsSecure$CombineFileInputFormatShim.getRecordReader(HadoopShimsSecure.java:356)         at org.apache.hadoop.hive.ql.io.CombineHiveInputFormat.getRecordReader(CombineHiveInputFormat.java:591)         at org.apache.hadoop.mapred.MapTask$TrackedRecordReader.<init>(MapTask.java:168)         at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:409)         at org.apache.hadoop.mapred.MapTask.run(MapTask.java:342)         at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:168)         at java.security.AccessController.doPrivileged(Native Method)         at javax.security.auth.Subject.doAs(Subject.java:415)         at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1614)         at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:163) Caused by: java.lang.reflect.InvocationTargetException         at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)         at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)         at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)         at java.lang.reflect.Constructor.newInstance(Constructor.java:526)         at org.apache.hadoop.hive.shims.HadoopShimsSecure$CombineFileRecordReader.initNextRecordReader(HadoopShimsSecure.java:281)         ... 11 more Caused by: java.io.IOException: Malformed ORC file hdfs://bigdata01.ibeifeng.com:8020/user/hive/warehouse/track_logs.db/track_log/date=20160323/20160323. Invalid postscript.         at org.apache.hadoop.hive.ql.io.orc.ReaderImpl.ensureOrcFooter(ReaderImpl.java:226)         at org.apache.hadoop.hive.ql.io.orc.ReaderImpl.extractMetaInfoFromFooter(ReaderImpl.java:336)         at org.apache.hadoop.hive.ql.io.orc.ReaderImpl.<init>(ReaderImpl.java:292)         at org.apache.hadoop.hive.ql.io.orc.OrcFile.createReader(OrcFile.java:197)         at org.apache.hadoop.hive.ql.io.orc.OrcInputFormat.getRecordReader(OrcInputFormat.java:997)         at org.apache.hadoop.hive.ql.io.CombineHiveRecordReader.<init>(CombineHiveRecordReader.java:65)         ... 16 more   FAILED: Execution Error, return code 2 from org.apache.hadoop.hive.ql.exec.mr.MapRedTask MapReduce Jobs Launched:  Job 0: Map: 1  Reduce: 1   HDFS Read: 0 HDFS Write: 0 FAIL Total MapReduce CPU Time Spent: 0 msec 

原因:
ORC格式是列式存储的表,不能直接从本地文件导入数据,只有当数据源表也是ORC格式存储时,才可以直接加载,否则会出现上述报错。

解决办法:
要么将数据源表改为以ORC格式存储的表,要么新建一个以textfile格式的临时表先将源文件数据加载到该表,然后在从textfile表中insert数据到ORC目标表中。

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