Na Yang created HIVE-7745:
-----------------------------
Summary: NullPointerException when turn on hive.merge.mapfiles and
hive.merge.mapredfiles [Spark Branch]
Key: HIVE-7745
URL: https://issues.apache.org/jira/browse/HIVE-7745
Project: Hive
Issue Type: Bug
Components: Spark
Reporter: Na Yang
Assignee: Na Yang
When the hive.merge.mapfiles and hive.merge.mapredfiles are turned on, it
throws NullPointerException when I do the following queries:
create table inputTbl1(key string, val string) stored as textfile;
create table outputTbl1(key string, values bigint) stored as rcfile;
load data local inpath '../../data/files/T1.txt' into table inputTbl1;
explain
insert overwrite table outputTbl1
SELECT * FROM
(
select key, count(1) as values from inputTbl1 group by key
union all
select * FROM (
SELECT key, 1 as values from inputTbl1
UNION ALL
SELECT key, 2 as values from inputTbl1
) a
)b;
If the hive.merge.mapfiles and hive.merge.mapredfiles are turned off, I do not
see any error.
Here is the stack trace:
2014-08-16 01:32:26,849 ERROR [main]: ql.Driver
(SessionState.java:printError(681)) - FAILED: NullPointerException null
java.lang.NullPointerException
at
org.apache.hadoop.hive.ql.optimizer.GenMapRedUtils.createMoveTask(GenMapRedUtils.java:1738)
at
org.apache.hadoop.hive.ql.parse.spark.GenSparkUtils.processFileSink(GenSparkUtils.java:281)
at
org.apache.hadoop.hive.ql.parse.spark.SparkCompiler.generateTaskTree(SparkCompiler.java:187)
at
org.apache.hadoop.hive.ql.parse.TaskCompiler.compile(TaskCompiler.java:199)
at
org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.analyzeInternal(SemanticAnalyzer.java:9508)
at
org.apache.hadoop.hive.ql.parse.BaseSemanticAnalyzer.analyze(BaseSemanticAnalyzer.java:208)
at
org.apache.hadoop.hive.ql.parse.ExplainSemanticAnalyzer.analyzeInternal(ExplainSemanticAnalyzer.java:74)
at
org.apache.hadoop.hive.ql.parse.BaseSemanticAnalyzer.analyze(BaseSemanticAnalyzer.java:208)
at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:414)
at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:310)
at org.apache.hadoop.hive.ql.Driver.compileInternal(Driver.java:1005)
at org.apache.hadoop.hive.ql.Driver.runInternal(Driver.java:1070)
at org.apache.hadoop.hive.ql.Driver.run(Driver.java:942)
at org.apache.hadoop.hive.ql.Driver.run(Driver.java:932)
at
org.apache.hadoop.hive.cli.CliDriver.processLocalCmd(CliDriver.java:246)
at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:198)
at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:408)
at
org.apache.hadoop.hive.cli.CliDriver.executeDriver(CliDriver.java:781)
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:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.hadoop.util.RunJar.main(RunJar.java:197)
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