[jira] [Created] (HIVE-13065) Hive throws NPE when writing map type data to a HBase backed table

["Yongzhi Chen (JIRA)" <ji...@apache.org>]

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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