Nick Dimiduk created HIVE-6117:
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Summary: mapreduce.RecordReader instance needs to be initialized
Key: HIVE-6117
URL: https://issues.apache.org/jira/browse/HIVE-6117
Project: Hive
Issue Type: Bug
Components: HBase Handler
Reporter: Nick Dimiduk
Assignee: Nick Dimiduk
The HBase storage handler makes use of a mapreduce.RecordReader instance but
does not initialize it when consumed from local context. This results in a NPE
for some queries, for instance
{noformat}
create table hbase_1(key string, age int) stored by
'org.apache.hadoop.hive.hbase.HBaseStorageHandler' with serdeproperties (
"hbase.columns.mapping" = "info:age");
insert overwrite table hbase_1 select name, SUM(age) from studenttab10k group
by name;
select * from hbase_1;
{noformat}
The select statement throws the following exception
{noformat}
13/12/18 01:30:32 ERROR CliDriver: Failed with exception
java.io.IOException:java.lang.NullPointerException
java.io.IOException: java.lang.NullPointerException
at
org.apache.hadoop.hive.ql.exec.FetchOperator.getNextRow(FetchOperator.java:551)
at org.apache.hadoop.hive.ql.exec.FetchOperator.pushRow(FetchOperator.java:489)
at org.apache.hadoop.hive.ql.exec.FetchTask.fetch(FetchTask.java:136)
at org.apache.hadoop.hive.ql.Driver.getResults(Driver.java:1494)
at org.apache.hadoop.hive.cli.CliDriver.processLocalCmd(CliDriver.java:271)
at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:216)
at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:413)
at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:348)
at org.apache.hadoop.hive.cli.CliDriver.processReader(CliDriver.java:446)
at org.apache.hadoop.hive.cli.CliDriver.processFile(CliDriver.java:456)
at org.apache.hadoop.hive.cli.CliDriver.executeDriver(CliDriver.java:737)
at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:675)
at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:614)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.apache.hadoop.util.RunJar.main(RunJar.java:212)
Caused by: java.lang.NullPointerException
at
org.apache.hadoop.hbase.mapreduce.TableRecordReaderImpl.nextKeyValue(TableRecordReaderImpl.java:196)
at
org.apache.hadoop.hbase.mapreduce.TableRecordReader.nextKeyValue(TableRecordReader.java:138)
at
org.apache.hadoop.hive.hbase.HiveHBaseTableInputFormat$1.next(HiveHBaseTableInputFormat.java:234)
at
org.apache.hadoop.hive.hbase.HiveHBaseTableInputFormat$1.next(HiveHBaseTableInputFormat.java:193)
at
org.apache.hadoop.hive.ql.exec.FetchOperator.getNextRow(FetchOperator.java:521)
{noformat}
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