Xuefu Zhang created HIVE-6984:
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Summary: Analyzing partitioned table with NULL values for the
partition column failed with NPE
Key: HIVE-6984
URL: https://issues.apache.org/jira/browse/HIVE-6984
Project: Hive
Issue Type: Bug
Components: Statistics
Affects Versions: 0.14.0
Reporter: Xuefu Zhang
The following describes how to produce the bug:
{code}
hive> desc test2;
name string
age int
hive> select * from test2;
Query ID = xzhang_20140428154343_bb921bce-7282-47b6-bfe8-669c7edaabe7
OK
6666666666666666666 NULL
5555555555555555555 NULL
tom 15
john NULL
mayr 40
30
NULL
hive> create table test3(name string) partitioned by (age int);
hive> from test2 insert overwrite table test3 partition(age) select test2.name,
test2.age;
Loading data to table default.test3 partition (age=null)
Loading partition {age=40}
Loading partition {age=__HIVE_DEFAULT_PARTITION__}
Loading partition {age=30}
Loading partition {age=15}
Partition default.test3{age=15} stats: [numFiles=1, numRows=1, totalSize=4,
rawDataSize=3]
Partition default.test3{age=30} stats: [numFiles=1, numRows=1, totalSize=1,
rawDataSize=0]
Partition default.test3{age=40} stats: [numFiles=1, numRows=1, totalSize=5,
rawDataSize=4]
Partition default.test3{age=__HIVE_DEFAULT_PARTITION__} stats: [numFiles=1,
numRows=4, totalSize=46, rawDataSize=42]
hive> analyze table test3 partition(age) compute statistics;
Task with the most failures(4):
-----
Task ID:
task_201403041834_0063_m_000000
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Diagnostic Messages for this Task:
java.lang.RuntimeException: org.apache.hadoop.hive.ql.metadata.HiveException:
Hive Runtime Error while processing row
{"name":"6666666666666666666","age":null,"raw__data__size":19}
at org.apache.hadoop.hive.ql.exec.mr.ExecMapper.map(ExecMapper.java:195)
at org.apache.hadoop.mapred.MapRunner.run(MapRunner.java:50)
at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:417)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:332)
at org.apache.hadoop.mapred.Child$4.run(Child.java:268)
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:1499)
at org.apache.hadoop.mapred.Child.main(Child.java:262)
Caused by: org.apache.hadoop.hive.ql.metadata.HiveException: Hive Runtime Error
while processing row
{"name":"6666666666666666666","age":null,"raw__data__size":19}
at
org.apache.hadoop.hive.ql.exec.MapOperator.process(MapOperator.java:549)
at org.apache.hado
FAILED: Execution Error, return code 2 from
org.apache.hadoop.hive.ql.exec.mr.MapRedTask
{code}
The following is the stack trace in mapper log:
{code}
2014-04-28 15:39:25,073 FATAL org.apache.hadoop.hive.ql.exec.mr.ExecMapper:
org.apache.hadoop.hive.ql.metadata.HiveException: Hive Runtime Error while
processing row {"name":"6666666666666666666","age":null,"raw__data__size":19}
at
org.apache.hadoop.hive.ql.exec.MapOperator.process(MapOperator.java:549)
at org.apache.hadoop.hive.ql.exec.mr.ExecMapper.map(ExecMapper.java:177)
at org.apache.hadoop.mapred.MapRunner.run(MapRunner.java:50)
at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:417)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:332)
at org.apache.hadoop.mapred.Child$4.run(Child.java:268)
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:1499)
at org.apache.hadoop.mapred.Child.main(Child.java:262)
Caused by: java.lang.NullPointerException
at
org.apache.hadoop.hive.ql.exec.TableScanOperator.gatherStats(TableScanOperator.java:149)
at
org.apache.hadoop.hive.ql.exec.TableScanOperator.processOp(TableScanOperator.java:90)
at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:796)
at
org.apache.hadoop.hive.ql.exec.MapOperator.process(MapOperator.java:539)
... 9 more
{code}
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