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https://issues.apache.org/jira/browse/PIG-4151?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14171925#comment-14171925
]
Thejas M Nair commented on PIG-4151:
------------------------------------
+1
> Pig Cannot Write Empty Maps to HBase
> ------------------------------------
>
> Key: PIG-4151
> URL: https://issues.apache.org/jira/browse/PIG-4151
> Project: Pig
> Issue Type: Bug
> Components: internal-udfs
> Reporter: Daniel Dai
> Assignee: Daniel Dai
> Fix For: 0.14.0
>
> Attachments: PIG-4151-1.patch
>
>
> Pig is unable to write empty maps to HBase. Instruction for reproduce:
> input file pig_data_bad.txt:
> {code}
> row1;Homer;Morrison;[1#Silvia,2#Stacy]
> row2;Sheila;Fletcher;[1#Becky,2#Salvador,3#Lois]
> row4;Andre;Morton;[1#Nancy]
> row3;Sonja;Webb;[]
> {code}
> Create table in hbase:
> create 'test', 'info', 'friends'
> Pig script:
> {code}
> source = LOAD '/pig_data_bad.txt' USING PigStorage(';') AS (row:chararray,
> first_name:chararray, last_name:chararray, friends:map[]);
> STORE source INTO 'hbase://test' USING
> org.apache.pig.backend.hadoop.hbase.HBaseStorage('info:fname info:lname
> friends:*');
> {code}
> Stack:
> java.lang.NullPointerException
> at
> org.apache.pig.backend.hadoop.hbase.HBaseStorage.putNext(HBaseStorage.java:880)
> at
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigOutputFormat$PigRecordWriter.write(PigOutputFormat.java:139)
> at
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigOutputFormat$PigRecordWriter.write(PigOutputFormat.java:98)
> at
> org.apache.hadoop.mapred.MapTask$NewDirectOutputCollector.write(MapTask.java:635)
> at
> org.apache.hadoop.mapreduce.task.TaskInputOutputContextImpl.write(TaskInputOutputContextImpl.java:89)
> at
> org.apache.hadoop.mapreduce.lib.map.WrappedMapper$Context.write(WrappedMapper.java:112)
> at
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigMapOnly$Map.collect(PigMapOnly.java:48)
> at
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigGenericMapBase.runPipeline(PigGenericMapBase.java:284)
> at
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigGenericMapBase.map(PigGenericMapBase.java:277)
> at
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigGenericMapBase.map(PigGenericMapBase.java:64)
> at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:145)
> at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:764)
> at org.apache.hadoop.mapred.MapTask.run(MapTask.java:340)
> at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:167)
> 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:1594)
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