CDH:5.14.0 中 Hive BUG记录

最近在工作中，使用CASE WHEN语句的时候，总是出现异常，查看日志是由于数组超界。不知所以然，然后进行了一步步分析，发现这是hive本身的bug，分享出来，一是为了记录，二是想让大家共同看看，欢迎指正。

使用的是CDH5.14.0版本。
CDH5.14.0使用的HIVE版本

自建日志表log：

+----------------------------------------------------+--+

|                   createtab_stmt                   |

+----------------------------------------------------+--+

| CREATE TABLE `log`(                                |

|   `mandt` char(3),                                 |

|   `zdate` char(10),                                |

|   `ztime` char(8),                                 |

|   `zguid` char(20),                                |

|   `ztype` char(1),                                 |

|   `zfuncname` varchar(30),                         |

|   `zseq` varchar(2),                               |

|   `xmldata` string,                                |

|   `xmldata2` string,                               |

|   `field1` varchar(20),                            |

|   `field2` varchar(20),                            |

|   `field3` varchar(20),                            |

|   `field4` varchar(20))                            |

| CLUSTERED BY (                                     |

|   zdate)                                           |

| INTO 12 BUCKETS                                    |

| ROW FORMAT SERDE                                   |

|   'org.apache.hadoop.hive.ql.io.orc.OrcSerde'      |

| WITH SERDEPROPERTIES (                             |

|   'field.delim'='\t',                              |

|   'serialization.format'='\t')                     |

| STORED AS INPUTFORMAT                              |

|   'org.apache.hadoop.hive.ql.io.orc.OrcInputFormat'  |

| OUTPUTFORMAT                                       |

|   'org.apache.hadoop.hive.ql.io.orc.OrcOutputFormat' |

| LOCATION                                           |

|   'hdfs://hserver1n:8020/user/hive/warehouse/sap.db/log' |

| TBLPROPERTIES (                                    |

|   'COLUMN_STATS_ACCURATE'='true',                  |

|   'compactor.mapreduce.map.memory.mb'='1024',      |

|   'compactorthreshold.hive.compactor.delta.num.threshold'='4',  |

|   'compactorthreshold.hive.compactor.delta.pct.threshold'='0.5',  |

|   'last_modified_by'='hdfs',                       |

|   'last_modified_time'='1522318887',               |

|   'numFiles'='14',                                 |

|   'numRows'='1000000',                             |

|   'rawDataSize'='0',                               |

|   'totalSize'='135774020',                         |

|   'transactional'='true',                          |

|   'transient_lastDdlTime'='1522393096')            |

+----------------------------------------------------+--+

41 rows selected (0.105 seconds)

此表共有13个字段，存储格式是 ORC列式存储，共有12个桶，并启用了事务。

查询语句：

select zdate,case zdate when '2013.07.23' then 'a' else 'b' end as zfunc from log limit 1;

错误描述(日志太长，部分省略)：

Log Type: syslog

Log Upload Time: Tue Apr 03 17:09:14 +0800 2018

Log Length: 80385

2018-04-03 17:08:36,788 INFO [main] org.apache.hadoop.hive.ql.exec.vector.VectorMapOperator: Initializing Self MAP[4]

2018-04-03 17:08:36,788 INFO [main] org.apache.hadoop.hive.ql.exec.TableScanOperator: Initializing Self TS[0]

2018-04-03 17:08:36,788 INFO [main] org.apache.hadoop.hive.ql.exec.TableScanOperator: Operator 0 TS initialized

2018-04-03 17:08:36,788 INFO [main] org.apache.hadoop.hive.ql.exec.TableScanOperator: Initializing children of 0 TS

2018-04-03 17:08:36,788 INFO [main] org.apache.hadoop.hive.ql.exec.vector.VectorSelectOperator: Initializing child 1 SEL

2018-04-03 17:08:36,788 INFO [main] org.apache.hadoop.hive.ql.exec.vector.VectorSelectOperator: Initializing Self SEL[1]

2018-04-03 17:08:36,792 INFO [main] org.apache.hadoop.hive.ql.exec.vector.VectorSelectOperator: Operator 1 SEL initialized

2018-04-03 17:08:36,792 INFO [main] org.apache.hadoop.hive.ql.exec.vector.VectorSelectOperator: Initializing children of 1 SEL

2018-04-03 17:08:36,792 INFO [main] org.apache.hadoop.hive.ql.exec.vector.VectorLimitOperator: Initializing child 2 LIM

2018-04-03 17:08:36,792 INFO [main] org.apache.hadoop.hive.ql.exec.vector.VectorLimitOperator: Initializing Self LIM[2]

2018-04-03 17:08:36,792 INFO [main] org.apache.hadoop.hive.ql.exec.vector.VectorLimitOperator: Operator 2 LIM initialized

2018-04-03 17:08:36,792 INFO [main] org.apache.hadoop.hive.ql.exec.vector.VectorLimitOperator: Initializing children of 2 LIM

2018-04-03 17:08:36,792 INFO [main] org.apache.hadoop.hive.ql.exec.vector.VectorFileSinkOperator: Initializing child 3 FS

2018-04-03 17:08:36,792 INFO [main] org.apache.hadoop.hive.ql.exec.vector.VectorFileSinkOperator: Initializing Self FS[3]

2018-04-03 17:08:36,793 INFO [main] org.apache.hadoop.conf.Configuration.deprecation: mapred.task.id is deprecated. Instead, use mapreduce.task.attempt.id

2018-04-03 17:08:36,908 INFO [main] org.apache.hadoop.hive.ql.exec.FileSinkOperator: Using serializer : class org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe[[[B@5d13d4e]:[_col0, _col1]:[char(10), string]] and formatter : org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat@7e1b4e9d

2018-04-03 17:08:36,908 INFO [main] org.apache.hadoop.conf.Configuration.deprecation: mapred.healthChecker.script.timeout is deprecated. Instead, use mapreduce.tasktracker.healthchecker.script.timeout

2018-04-03 17:08:36,909 INFO [main] org.apache.hadoop.hive.ql.exec.vector.VectorFileSinkOperator: Operator 3 FS initialized

2018-04-03 17:08:36,909 INFO [main] org.apache.hadoop.hive.ql.exec.vector.VectorFileSinkOperator: Initialization Done 3 FS

2018-04-03 17:08:36,909 INFO [main] org.apache.hadoop.conf.Configuration.deprecation: mapred.task.is.map is deprecated. Instead, use mapreduce.task.ismap

2018-04-03 17:08:36,909 INFO [main] org.apache.hadoop.hive.ql.exec.vector.VectorLimitOperator: Initialization Done 2 LIM

2018-04-03 17:08:36,909 INFO [main] org.apache.hadoop.hive.ql.exec.vector.VectorSelectOperator: Initialization Done 1 SEL

2018-04-03 17:08:36,909 INFO [main] org.apache.hadoop.hive.ql.exec.TableScanOperator: Initialization Done 0 TS

2018-04-03 17:08:36,909 INFO [main] org.apache.hadoop.hive.ql.exec.vector.VectorMapOperator: Initialization Done 4 MAP

2018-04-03 17:08:38,231 FATAL [main] org.apache.hadoop.hive.ql.exec.mr.ExecMapper: org.apache.hadoop.hive.ql.metadata.HiveException: Hive Runtime Error while processing row

	at org.apache.hadoop.hive.ql.exec.vector.VectorMapOperator.process(VectorMapOperator.java:52)

	at org.apache.hadoop.hive.ql.exec.mr.ExecMapper.map(ExecMapper.java:170)

	at org.apache.hadoop.mapred.MapRunner.run(MapRunner.java:54)

	at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:459)

	at org.apache.hadoop.mapred.MapTask.run(MapTask.java:343)

	at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:164)

	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:1917)

	at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:158)

Caused by: org.apache.hadoop.hive.ql.metadata.HiveException: Error evaluating CASE (zfuncname) WHEN ('ZFI_VENDOR_TO_CRM') THEN ('a') ELSE ('b') END

	at org.apache.hadoop.hive.ql.exec.vector.VectorSelectOperator.processOp(VectorSelectOperator.java:126)

	at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:815)

	at org.apache.hadoop.hive.ql.exec.TableScanOperator.processOp(TableScanOperator.java:98)

	at org.apache.hadoop.hive.ql.exec.MapOperator$MapOpCtx.forward(MapOperator.java:157)

	at org.apache.hadoop.hive.ql.exec.vector.VectorMapOperator.process(VectorMapOperator.java:45)

	... 9 more

Caused by: java.lang.ArrayIndexOutOfBoundsException: 13

	at org.apache.hadoop.hive.ql.exec.vector.udf.VectorUDFAdaptor.evaluate(VectorUDFAdaptor.java:117)

	at org.apache.hadoop.hive.ql.exec.vector.VectorSelectOperator.processOp(VectorSelectOperator.java:124)

	... 13 more

2018-04-03 17:08:38,231 INFO [main] org.apache.hadoop.hive.ql.exec.vector.VectorMapOperator: 4 finished. closing...

2018-04-03 17:08:38,231 INFO [main] org.apache.hadoop.hive.ql.exec.vector.VectorMapOperator: RECORDS_IN:0

2018-04-03 17:08:38,231 INFO [main] org.apache.hadoop.hive.ql.exec.vector.VectorMapOperator: DESERIALIZE_ERRORS:0

2018-04-03 17:08:38,231 INFO [main] org.apache.hadoop.hive.ql.exec.TableScanOperator: 0 finished. closing...

2018-04-03 17:08:38,231 INFO [main] org.apache.hadoop.hive.ql.exec.vector.VectorSelectOperator: 1 finished. closing...

2018-04-03 17:08:38,231 INFO [main] org.apache.hadoop.hive.ql.exec.vector.VectorLimitOperator: 2 finished. closing...

2018-04-03 17:08:38,231 INFO [main] org.apache.hadoop.hive.ql.exec.vector.VectorFileSinkOperator: 3 finished. closing...

2018-04-03 17:08:38,231 INFO [main] org.apache.hadoop.hive.ql.exec.FileSinkOperator: FS[3]: records written - 0

2018-04-03 17:08:38,231 INFO [main] org.apache.hadoop.hive.ql.exec.FileSinkOperator: Final Path: FS hdfs://hserver1n:8020/tmp/hive/hdfs/e62bf883-074a-44b2-8b04-2b69d4475a66/hive_2018-04-03_17-08-17_236_6563852616584890762-25/-mr-10000/.hive-staging_hive_2018-04-03_17-08-17_236_6563852616584890762-25/_tmp.-ext-10001/000000_0

2018-04-03 17:08:38,232 INFO [main] org.apache.hadoop.hive.ql.exec.FileSinkOperator: Writing to temp file: FS hdfs://hserver1n:8020/tmp/hive/hdfs/e62bf883-074a-44b2-8b04-2b69d4475a66/hive_2018-04-03_17-08-17_236_6563852616584890762-25/-mr-10000/.hive-staging_hive_2018-04-03_17-08-17_236_6563852616584890762-25/_task_tmp.-ext-10001/_tmp.000000_0

2018-04-03 17:08:38,232 INFO [main] org.apache.hadoop.hive.ql.exec.FileSinkOperator: New Final Path: FS hdfs://hserver1n:8020/tmp/hive/hdfs/e62bf883-074a-44b2-8b04-2b69d4475a66/hive_2018-04-03_17-08-17_236_6563852616584890762-25/-mr-10000/.hive-staging_hive_2018-04-03_17-08-17_236_6563852616584890762-25/_tmp.-ext-10001/000000_0

2018-04-03 17:08:38,623 INFO [main] org.apache.hadoop.hive.ql.exec.vector.VectorFileSinkOperator: RECORDS_OUT_0:0

2018-04-03 17:08:38,623 INFO [main] org.apache.hadoop.hive.ql.exec.vector.VectorFileSinkOperator: 3 Close done

2018-04-03 17:08:38,623 INFO [main] org.apache.hadoop.hive.ql.exec.vector.VectorLimitOperator: 2 Close done

2018-04-03 17:08:38,623 INFO [main] org.apache.hadoop.hive.ql.exec.vector.VectorSelectOperator: 1 Close done

2018-04-03 17:08:38,623 INFO [main] org.apache.hadoop.hive.ql.exec.TableScanOperator: 0 Close done

2018-04-03 17:08:38,623 INFO [main] org.apache.hadoop.hive.ql.exec.vector.VectorMapOperator: 4 Close done

2018-04-03 17:08:38,624 WARN [main] org.apache.hadoop.mapred.YarnChild: Exception running child : java.lang.RuntimeException: org.apache.hadoop.hive.ql.metadata.HiveException: Hive Runtime Error while processing row

	at org.apache.hadoop.hive.ql.exec.mr.ExecMapper.map(ExecMapper.java:179)

	at org.apache.hadoop.mapred.MapRunner.run(MapRunner.java:54)

	at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:459)

	at org.apache.hadoop.mapred.MapTask.run(MapTask.java:343)

	at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:164)

	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:1917)

	at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:158)

Caused by: org.apache.hadoop.hive.ql.metadata.HiveException: Hive Runtime Error while processing row

	at org.apache.hadoop.hive.ql.exec.vector.VectorMapOperator.process(VectorMapOperator.java:52)

	at org.apache.hadoop.hive.ql.exec.mr.ExecMapper.map(ExecMapper.java:170)

	... 8 more

Caused by: org.apache.hadoop.hive.ql.metadata.HiveException: Error evaluating CASE (zfuncname) WHEN ('ZFI_VENDOR_TO_CRM') THEN ('a') ELSE ('b') END

	at org.apache.hadoop.hive.ql.exec.vector.VectorSelectOperator.processOp(VectorSelectOperator.java:126)

	at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:815)

	at org.apache.hadoop.hive.ql.exec.TableScanOperator.processOp(TableScanOperator.java:98)

	at org.apache.hadoop.hive.ql.exec.MapOperator$MapOpCtx.forward(MapOperator.java:157)

	at org.apache.hadoop.hive.ql.exec.vector.VectorMapOperator.process(VectorMapOperator.java:45)

	... 9 more

Caused by: java.lang.ArrayIndexOutOfBoundsException: 13

	at org.apache.hadoop.hive.ql.exec.vector.udf.VectorUDFAdaptor.evaluate(VectorUDFAdaptor.java:117)

	at org.apache.hadoop.hive.ql.exec.vector.VectorSelectOperator.processOp(VectorSelectOperator.java:124)

	... 13 more

2018-04-03 17:08:39,369 INFO [main] org.apache.hadoop.mapred.Task: Runnning cleanup for the task

2018-04-03 17:08:39,496 INFO [main] org.apache.hadoop.metrics2.impl.MetricsSystemImpl: Stopping MapTask metrics system...

2018-04-03 17:08:39,496 INFO [main] org.apache.hadoop.metrics2.impl.MetricsSystemImpl: MapTask metrics system stopped.

2018-04-03 17:08:39,496 INFO [main] org.apache.hadoop.metrics2.impl.MetricsSystemImpl: MapTask metrics system shutdown complete.

错误分析：

日志给出的错误原因是13超过了数组的边界，猜想是系统认为总共有12桶，超过了桶的个数，故报错，后面进行验证。

故一步步排除，首先创建了一个简单的表：

0: jdbc:hive2://localhost:10000> create table log2(

. . . . . . . . . . . . . . . .> mandt char(3),

. . . . . . . . . . . . . . . .> zdate char(10),

. . . . . . . . . . . . . . . .> ztime char(8),

. . . . . . . . . . . . . . . .> zguid char(20),

. . . . . . . . . . . . . . . .> ztype char(1),

. . . . . . . . . . . . . . . .> zfuncname varchar(30),

. . . . . . . . . . . . . . . .> zseq varchar(2),

. . . . . . . . . . . . . . . .> xmldata string,

. . . . . . . . . . . . . . . .> xmldata2 string,

. . . . . . . . . . . . . . . .> field1 varchar(20),

. . . . . . . . . . . . . . . .> field2 varchar(20),

. . . . . . . . . . . . . . . .> field3 varchar(20),

. . . . . . . . . . . . . . . .> field4 varchar(20))

. . . . . . . . . . . . . . . .> row format delimited fields terminated by '\t';

然后将log数据库中部分数据导入到此表中，再使用上面查询语句查询(将数据库表名改成新建的表log2)，可以得到正确结果。

然后再在上面基础之上使用ORC方式存储，也可以得到正确结果；

然后在ORC基础之上，再使用分桶，也可以得到正确结果，可见并不是分桶的原因；

然后再分桶基础之上，再创建事务表，则会出现错误，可见此错误是由于使用了事务的原因。

为了验证后面的Hive版本是否已解决，下载了apache hive2.3.0版本测试了一下，已没有问题。

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