GitHub user zhaohm3 opened a pull request:
https://github.com/apache/hive/pull/28
Fix Hive ParseException while parsing Grouping Sets
Currently, when Hive parses GROUPING SETS clauses, Hive will throw
ParseException while parsing the following HQLs:
drop table test;
create table test(tc1 int, tc2 int, tc3 int);
explain select test.tc1, test.tc2 from test group by test.tc1, test.tc2
grouping sets(test.tc1, (test.tc1, test.tc2));
explain select tc1+tc2, tc2 from test group by tc1+tc2, tc2 grouping
sets(tc2, (tc1 + tc2, tc2));
drop table test;
The following contents show some ParseExctption stacktrace:
2015-01-07 09:53:34,718 INFO [main]: log.PerfLogger
(PerfLogger.java:PerfLogBegin(108)) - <PERFLOG method=Driver.run
from=org.apache.hadoop.hive.ql.Driver>
2015-01-07 09:53:34,719 INFO [main]: log.PerfLogger
(PerfLogger.java:PerfLogBegin(108)) - <PERFLOG method=TimeToSubmit
from=org.apache.hadoop.hive.ql.Driver>
2015-01-07 09:53:34,721 INFO [main]: ql.Driver
(Driver.java:checkConcurrency(158)) - Concurrency mode is disabled, not
creating a lock manager
2015-01-07 09:53:34,721 INFO [main]: log.PerfLogger
(PerfLogger.java:PerfLogBegin(108)) - <PERFLOG method=compile
from=org.apache.hadoop.hive.ql.Driver>
2015-01-07 09:53:34,724 INFO [main]: log.PerfLogger
(PerfLogger.java:PerfLogBegin(108)) - <PERFLOG method=parse
from=org.apache.hadoop.hive.ql.Driver>
2015-01-07 09:53:34,724 INFO [main]: parse.ParseDriver
(ParseDriver.java:parse(185)) - Parsing command: explain select test.tc1,
test.tc2 from test group by test.tc1, test.tc2 grouping sets(test.tc1,
(test.tc1, test.tc2))
2015-01-07 09:53:34,734 ERROR [main]: ql.Driver
(SessionState.java:printError(545)) - FAILED: ParseException line 1:105 missing
) at ',' near '<EOF>'
line 1:116 extraneous input ')' expecting EOF near '<EOF>'
org.apache.hadoop.hive.ql.parse.ParseException: line 1:105 missing ) at
',' near '<EOF>'
line 1:116 extraneous input ')' expecting EOF near '<EOF>'
at
org.apache.hadoop.hive.ql.parse.ParseDriver.parse(ParseDriver.java:210)
at
org.apache.hadoop.hive.ql.parse.ParseDriver.parse(ParseDriver.java:166)
at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:404)
at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:322)
at org.apache.hadoop.hive.ql.Driver.compileInternal(Driver.java:975)
at org.apache.hadoop.hive.ql.Driver.runInternal(Driver.java:1040)
at org.apache.hadoop.hive.ql.Driver.run(Driver.java:911)
at org.apache.hadoop.hive.ql.Driver.run(Driver.java:901)
at
org.apache.hadoop.hive.cli.CliDriver.processLocalCmd(CliDriver.java:268)
at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:220)
at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:423)
at
org.apache.hadoop.hive.cli.CliDriver.executeDriver(CliDriver.java:792)
at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:686)
at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:625)
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:606)
at org.apache.hadoop.util.RunJar.main(RunJar.java:208)
2015-01-07 09:53:34,745 INFO [main]: log.PerfLogger
(PerfLogger.java:PerfLogEnd(135)) - </PERFLOG method=compile
start=1420595614721 end=1420595614745 duration=24
from=org.apache.hadoop.hive.ql.Driver>
2015-01-07 09:53:34,745 INFO [main]: log.PerfLogger
(PerfLogger.java:PerfLogBegin(108)) - <PERFLOG method=releaseLocks
from=org.apache.hadoop.hive.ql.Driver>
2015-01-07 09:53:34,746 INFO [main]: log.PerfLogger
(PerfLogger.java:PerfLogEnd(135)) - </PERFLOG method=releaseLocks
start=1420595614745 end=1420595614746 duration=1
from=org.apache.hadoop.hive.ql.Driver>
2015-01-07 09:53:34,746 INFO [main]: log.PerfLogger
(PerfLogger.java:PerfLogBegin(108)) - <PERFLOG method=releaseLocks
from=org.apache.hadoop.hive.ql.Driver>
2015-01-07 09:53:34,746 INFO [main]: log.PerfLogger
(PerfLogger.java:PerfLogEnd(135)) - </PERFLOG method=releaseLocks
start=1420595614746 end=1420595614746 duration=0
from=org.apache.hadoop.hive.ql.Driver>
But, Hive will not throw ParseException while handling the follwing HQLs:
drop table test;
create table test(tc1 int, tc2 int, tc3 int);
explain select tc1, test.tc2 from test group by tc1, test.tc2 grouping
sets(tc1, (tc1, test.tc2));
explain select tc1+tc2, tc1 from test group by tc1+tc2, tc1 grouping
sets(tc1, (tc1, tc1 + tc2));
explain select test.tc1, test.tc1 + test.tc2 from test group by
test.tc1, test.tc1 + test.tc2 grouping sets(test.tc1, (test.tc1), (test.tc1 +
test.tc2));
drop table test;
For more details, see here: https://www.zybuluo.com/Spongcer/note/61369
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/zhaohm3/hive dev
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/hive/pull/28.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #28
----
commit fc8a2d4ae3b45c0adc384bb908a41489e02ea560
Author: zhaohm3 <zhao...@asiainfo.com>
Date: 2015-01-05T06:05:00Z
Modefided IdentifiersParser.g
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