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

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.1.0, 2.0.0
• Fix Version/s: 1.3.0, 2.1.0
• Component/s: HBase Handler
• Assignee: Yongzhi Chen
• Reporter: Yongzhi Chen
• Created: 16/Feb/16 21:11
• Updated: 16/Mar/18 11:40
• Resolved: 18/Feb/16 18:58

Description

Hive throws NPE when writing data to a HBase backed table with below conditions:

1. There is a map type column
2. The map type column has NULL in its values

Below are the reproduce steps:

1) Create a HBase backed Hive table

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");

2) insert data into above table

insert overwrite table hbase_test select 1 as id, map('abcd', null) as data from src limit 1;

The mapreduce job for insert query fails. Error messages are as below:

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

Issue Links

• is related to: HIVE-18975 NPE when inserting NULL value in structure and array with HBase table