Yongzhi Chen created HIVE-13065:
-----------------------------------
Summary: Hive throws NPE when writing map type data to a HBase
backed table
Key: HIVE-13065
URL: https://issues.apache.org/jira/browse/HIVE-13065
Project: Hive
Issue Type: Bug
Components: HBase Handler
Affects Versions: 1.1.0, 2.0.0
Reporter: Yongzhi Chen
Assignee: Yongzhi Chen
Hive throws NPE when writing data to a HBase backed table with below conditions:
# There is a map type column
# The map type column has NULL in its values
Below are the reproduce steps:
*1) Create a HBase backed Hive table*
{code:sql}
create table hbase_test (id bigint, data map<string, string>)
stored by 'org.apache.hadoop.hive.hbase.HBaseStorageHandler'
with serdeproperties ("hbase.columns.mapping" = ":key,cf:map_col")
tblproperties ("hbase.table.name" = "hive_test");
{code}
*2) insert data into above table*
{code:sql}
insert overwrite table hbase_test select 1 as id, map('abcd', null) as data
from src limit 1;
{code}
The mapreduce job for insert query fails. Error messages are as below:
{noformat}
2016-02-15 02:26:33,225 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 (tag=0) {"key":{},"value":{"_col0":1,"_col1":{"abcd":null}}}
at
org.apache.hadoop.hive.ql.exec.mr.ExecReducer.reduce(ExecReducer.java:265)
at
org.apache.hadoop.mapred.ReduceTask.runOldReducer(ReduceTask.java:444)
at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:392)
at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:163)
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:1671)
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 (tag=0)
{"key":{},"value":{"_col0":1,"_col1":{"abcd":null}}}
at
org.apache.hadoop.hive.ql.exec.mr.ExecReducer.reduce(ExecReducer.java:253)
... 7 more
Caused by: org.apache.hadoop.hive.ql.metadata.HiveException:
org.apache.hadoop.hive.serde2.SerDeException: java.lang.NullPointerException
at
org.apache.hadoop.hive.ql.exec.FileSinkOperator.processOp(FileSinkOperator.java:731)
at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:815)
at
org.apache.hadoop.hive.ql.exec.SelectOperator.processOp(SelectOperator.java:84)
at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:815)
at
org.apache.hadoop.hive.ql.exec.LimitOperator.processOp(LimitOperator.java:51)
at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:815)
at
org.apache.hadoop.hive.ql.exec.SelectOperator.processOp(SelectOperator.java:84)
at
org.apache.hadoop.hive.ql.exec.mr.ExecReducer.reduce(ExecReducer.java:244)
... 7 more
Caused by: org.apache.hadoop.hive.serde2.SerDeException:
java.lang.NullPointerException
at
org.apache.hadoop.hive.hbase.HBaseSerDe.serialize(HBaseSerDe.java:286)
at
org.apache.hadoop.hive.ql.exec.FileSinkOperator.processOp(FileSinkOperator.java:666)
... 14 more
Caused by: java.lang.NullPointerException
at
org.apache.hadoop.hive.serde2.lazy.LazyUtils.writePrimitiveUTF8(LazyUtils.java:221)
at
org.apache.hadoop.hive.hbase.HBaseRowSerializer.serialize(HBaseRowSerializer.java:236)
at
org.apache.hadoop.hive.hbase.HBaseRowSerializer.serialize(HBaseRowSerializer.java:275)
at
org.apache.hadoop.hive.hbase.HBaseRowSerializer.serialize(HBaseRowSerializer.java:222)
at
org.apache.hadoop.hive.hbase.HBaseRowSerializer.serializeField(HBaseRowSerializer.java:194)
at
org.apache.hadoop.hive.hbase.HBaseRowSerializer.serialize(HBaseRowSerializer.java:118)
at
org.apache.hadoop.hive.hbase.HBaseSerDe.serialize(HBaseSerDe.java:282)
... 15 more
{noformat}
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