Hive Bug修复:ORC表中array数据类型长度超过1024报异常

目前HVIE里查询如下语句报错：

select * from dw.ticket_user_mtime limit 10;

错误如下：

17/07/06 16:45:38 [main]: DEBUG impl.RecordReaderImpl: merge = [{data range [22733, 19927580), size: 19904847 type: array-backed}]
Failed with exception java.io.IOException:java.lang.ArrayIndexOutOfBoundsException: 1024
17/07/06 16:45:38 [main]: ERROR CliDriver: Failed with exception java.io.IOException:java.lang.ArrayIndexOutOfBoundsException: 1024
java.io.IOException: java.lang.ArrayIndexOutOfBoundsException: 1024
at org.apache.hadoop.hive.ql.exec.FetchOperator.getNextRow(FetchOperator.java:517)
at org.apache.hadoop.hive.ql.exec.FetchOperator.pushRow(FetchOperator.java:424)
at org.apache.hadoop.hive.ql.exec.FetchTask.fetch(FetchTask.java:144)
at org.apache.hadoop.hive.ql.Driver.getResults(Driver.java:1885)
at org.apache.hadoop.hive.cli.CliDriver.processLocalCmd(CliDriver.java:252)
at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:183)
at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:399)
at org.apache.hadoop.hive.cli.CliDriver.executeDriver(CliDriver.java:776)
at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:714)
at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:641)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.apache.hadoop.util.RunJar.run(RunJar.java:221)
at org.apache.hadoop.util.RunJar.main(RunJar.java:136)
Caused by: java.lang.ArrayIndexOutOfBoundsException: 1024
at org.apache.orc.impl.RunLengthIntegerReaderV2.nextVector(RunLengthIntegerReaderV2.java:369)
at org.apache.orc.impl.TreeReaderFactory$BytesColumnVectorUtil.commonReadByteArrays(TreeReaderFactory.java:1231)
at org.apache.orc.impl.TreeReaderFactory$BytesColumnVectorUtil.readOrcByteArrays(TreeReaderFactory.java:1268)
at org.apache.orc.impl.TreeReaderFactory$StringDirectTreeReader.nextVector(TreeReaderFactory.java:1368)
at org.apache.orc.impl.TreeReaderFactory$StringTreeReader.nextVector(TreeReaderFactory.java:1212)
at org.apache.orc.impl.TreeReaderFactory$ListTreeReader.nextVector(TreeReaderFactory.java:1902)
at org.apache.orc.impl.TreeReaderFactory$StructTreeReader.nextBatch(TreeReaderFactory.java:1737)
at org.apache.orc.impl.RecordReaderImpl.nextBatch(RecordReaderImpl.java:1045)
at org.apache.hadoop.hive.ql.io.orc.RecordReaderImpl.ensureBatch(RecordReaderImpl.java:77)
at org.apache.hadoop.hive.ql.io.orc.RecordReaderImpl.hasNext(RecordReaderImpl.java:89)
at org.apache.hadoop.hive.ql.io.orc.OrcInputFormat$OrcRecordReader.next(OrcInputFormat.java:230)
at org.apache.hadoop.hive.ql.io.orc.OrcInputFormat$OrcRecordReader.next(OrcInputFormat.java:205)
at org.apache.hadoop.hive.ql.exec.FetchOperator.getNextRow(FetchOperator.java:484)
... 15 more

hive 补丁位置https://issues.apache.org/jira/browse/HIVE-14483

该BUG触发的条件是，orc表中，array数据类型，并且当array这个字段中数组的元素超过1024个。

可以通过打补丁的方式修复，重新编译hive的源码得到 hive-exec-2.1.0.jar 以及hive-orc-2.1.0.jar，

将这两个jar包更新到所有线上的hive客户端的lib，然后需要重启hive相关的服务（轮流重启hive metasotre，然后轮流重启hiveserver2）。

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Hive Bug修复:ORC表中array数据类型长度超过1024报异常

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