Re: Problems with 0.11, count(DISTINCT), and NPE
Doing:
set hive.auto.convert.join.noconditionaltask=false;
makes it work (though it does way more map reduce jobs than it should). When I
get some time I will test against the latest trunk.
Thanks,
Nate
On Sep 3, 2013, at 6:09 PM, Yin Huai huaiyin@gmail.com wrote:
Based on the log, it may be also related to
https://issues.apache.org/jira/browse/HIVE-4927. To make it work (in a not
very optimized way), can you try set
hive.auto.convert.join.noconditionaltask=false; ? If you still get the
error, give set hive.auto.convert.join=false; a try (it will turn off map
join auto convert, so you will use reduce-side join).
Thanks,
Yin
On Tue, Sep 3, 2013 at 6:03 PM, Ashutosh Chauhan hashut...@apache.org wrote:
Not sure about EMR. Your best bet is to ask on EMR forums.
Thanks,
Ashutosh
On Tue, Sep 3, 2013 at 2:18 PM, Nathanial Thelen n...@natethelen.com wrote:
Is there a way to run a patch on EMR?
Thanks,
Nate
On Sep 3, 2013, at 2:14 PM, Ashutosh Chauhan hashut...@apache.org wrote:
Fix in very related area has been checked in trunk today :
https://issues.apache.org/jira/browse/HIVE-5129 Likely that will fix your
issue.
Can you try latest trunk?
Ashutosh
On Tue, Sep 3, 2013 at 2:03 PM, Nathanial Thelen n...@natethelen.com wrote:
I am running Hive in EMR and since upgrading to 0.11 from 0.8.1.8 I have
been getting NullPointerExceptions (NPE) for certain queries in our staging
environment. Only difference between stage and production is the amount of
traffic we get so the data set is much smaller. We are not using any custom
code.
I have greatly simplified the query down to the bare minimum that will cause
the error:
SELECT
count(DISTINCT ag.adGroupGuid) as groups,
count(DISTINCT av.adViewGuid) as ads,
count(DISTINCT ac.adViewGuid) as uniqueClicks
FROM
adgroup ag
INNER JOIN adview av ON av.adGroupGuid = ag.adGroupGuid
LEFT OUTER JOIN adclick ac ON ac.adViewGuid = av.adViewGuid
This will return the following before any Map Reduce jobs start:
FAILED: NullPointerException null
Looking in the hive log at /mnt/var/log/apps/hive_0110.log and scanning, I
see this error:
2013-09-03 18:09:19,796 INFO org.apache.hadoop.hive.ql.exec.Utilities
(Utilities.java:getInputSummary(1889)) - Cache Content Summary for
s3://{ourS3Bucket}/hive/data/stage/adgroup/year=2013/month=08/day=29 length:
94324 file count: 20 directory count: 1
2013-09-03 18:09:19,796 INFO org.apache.hadoop.hive.ql.exec.Utilities
(Utilities.java:getInputSummary(1889)) - Cache Content Summary for
s3://{ourS3Bucket}/hive/data/stage/adview/year=2013/month=08/day=30 length:
142609 file count: 21 directory count: 1
2013-09-03 18:09:19,796 INFO org.apache.hadoop.hive.ql.exec.Utilities
(Utilities.java:getInputSummary(1889)) - Cache Content Summary for
s3://{ourS3Bucket}/hive/data/stage/adgroup/year=2013/month=08/day=30 length:
65519 file count: 21 directory count: 1
2013-09-03 18:09:19,796 INFO org.apache.hadoop.hive.ql.exec.Utilities
(Utilities.java:getInputSummary(1889)) - Cache Content Summary for
s3://{ourS3Bucket}/hive/data/stage/adview/year=2013/month=08/day=29 length:
205096 file count: 20 directory count: 1
2013-09-03 18:09:19,800 INFO
org.apache.hadoop.hive.ql.optimizer.physical.MetadataOnlyOptimizer
(MetadataOnlyOptimizer.java:dispatch(267)) - Looking for table scans where
optimization is applicable
2013-09-03 18:09:19,801 INFO
org.apache.hadoop.hive.ql.optimizer.physical.MetadataOnlyOptimizer
(MetadataOnlyOptimizer.java:dispatch(301)) - Found 0 metadata only table
scans
2013-09-03 18:09:19,801 INFO
org.apache.hadoop.hive.ql.optimizer.physical.MetadataOnlyOptimizer
(MetadataOnlyOptimizer.java:dispatch(267)) - Looking for table scans where
optimization is applicable
2013-09-03 18:09:19,801 INFO
org.apache.hadoop.hive.ql.optimizer.physical.MetadataOnlyOptimizer
(MetadataOnlyOptimizer.java:dispatch(301)) - Found 1 metadata only table
scans
2013-09-03 18:09:19,801 ERROR org.apache.hadoop.hive.ql.Driver
(SessionState.java:printError(386)) - FAILED: NullPointerException null
java.lang.NullPointerException
at
org.apache.hadoop.hive.ql.optimizer.physical.MetadataOnlyOptimizer$MetadataOnlyTaskDispatcher.dispatch(MetadataOnlyOptimizer.java:308)
at
org.apache.hadoop.hive.ql.lib.DefaultGraphWalker.dispatch(DefaultGraphWalker.java:87)
at
org.apache.hadoop.hive.ql.lib.DefaultGraphWalker.walk(DefaultGraphWalker.java:124)
at
org.apache.hadoop.hive.ql.lib.DefaultGraphWalker.startWalking(DefaultGraphWalker.java:101)
at
org.apache.hadoop.hive.ql.optimizer.physical.MetadataOnlyOptimizer.resolve(MetadataOnlyOptimizer.java:175)
at
org.apache.hadoop.hive.ql.optimizer.physical.PhysicalOptimizer.optimize(PhysicalOptimizer.java:79)
at
org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.genMapRedTasks(SemanticAnalyzer.java:8426
Re: Problems with 0.11, count(DISTINCT), and NPE
Is there a way to run a patch on EMR?
Thanks,
Nate
On Sep 3, 2013, at 2:14 PM, Ashutosh Chauhan hashut...@apache.org wrote:
Fix in very related area has been checked in trunk today :
https://issues.apache.org/jira/browse/HIVE-5129 Likely that will fix your
issue.
Can you try latest trunk?
Ashutosh
On Tue, Sep 3, 2013 at 2:03 PM, Nathanial Thelen n...@natethelen.com wrote:
I am running Hive in EMR and since upgrading to 0.11 from 0.8.1.8 I have been
getting NullPointerExceptions (NPE) for certain queries in our staging
environment. Only difference between stage and production is the amount of
traffic we get so the data set is much smaller. We are not using any custom
code.
I have greatly simplified the query down to the bare minimum that will cause
the error:
SELECT
count(DISTINCT ag.adGroupGuid) as groups,
count(DISTINCT av.adViewGuid) as ads,
count(DISTINCT ac.adViewGuid) as uniqueClicks
FROM
adgroup ag
INNER JOIN adview av ON av.adGroupGuid = ag.adGroupGuid
LEFT OUTER JOIN adclick ac ON ac.adViewGuid = av.adViewGuid
This will return the following before any Map Reduce jobs start:
FAILED: NullPointerException null
Looking in the hive log at /mnt/var/log/apps/hive_0110.log and scanning, I
see this error:
2013-09-03 18:09:19,796 INFO org.apache.hadoop.hive.ql.exec.Utilities
(Utilities.java:getInputSummary(1889)) - Cache Content Summary for
s3://{ourS3Bucket}/hive/data/stage/adgroup/year=2013/month=08/day=29 length:
94324 file count: 20 directory count: 1
2013-09-03 18:09:19,796 INFO org.apache.hadoop.hive.ql.exec.Utilities
(Utilities.java:getInputSummary(1889)) - Cache Content Summary for
s3://{ourS3Bucket}/hive/data/stage/adview/year=2013/month=08/day=30 length:
142609 file count: 21 directory count: 1
2013-09-03 18:09:19,796 INFO org.apache.hadoop.hive.ql.exec.Utilities
(Utilities.java:getInputSummary(1889)) - Cache Content Summary for
s3://{ourS3Bucket}/hive/data/stage/adgroup/year=2013/month=08/day=30 length:
65519 file count: 21 directory count: 1
2013-09-03 18:09:19,796 INFO org.apache.hadoop.hive.ql.exec.Utilities
(Utilities.java:getInputSummary(1889)) - Cache Content Summary for
s3://{ourS3Bucket}/hive/data/stage/adview/year=2013/month=08/day=29 length:
205096 file count: 20 directory count: 1
2013-09-03 18:09:19,800 INFO
org.apache.hadoop.hive.ql.optimizer.physical.MetadataOnlyOptimizer
(MetadataOnlyOptimizer.java:dispatch(267)) - Looking for table scans where
optimization is applicable
2013-09-03 18:09:19,801 INFO
org.apache.hadoop.hive.ql.optimizer.physical.MetadataOnlyOptimizer
(MetadataOnlyOptimizer.java:dispatch(301)) - Found 0 metadata only table scans
2013-09-03 18:09:19,801 INFO
org.apache.hadoop.hive.ql.optimizer.physical.MetadataOnlyOptimizer
(MetadataOnlyOptimizer.java:dispatch(267)) - Looking for table scans where
optimization is applicable
2013-09-03 18:09:19,801 INFO
org.apache.hadoop.hive.ql.optimizer.physical.MetadataOnlyOptimizer
(MetadataOnlyOptimizer.java:dispatch(301)) - Found 1 metadata only table scans
2013-09-03 18:09:19,801 ERROR org.apache.hadoop.hive.ql.Driver
(SessionState.java:printError(386)) - FAILED: NullPointerException null
java.lang.NullPointerException
at
org.apache.hadoop.hive.ql.optimizer.physical.MetadataOnlyOptimizer$MetadataOnlyTaskDispatcher.dispatch(MetadataOnlyOptimizer.java:308)
at
org.apache.hadoop.hive.ql.lib.DefaultGraphWalker.dispatch(DefaultGraphWalker.java:87)
at
org.apache.hadoop.hive.ql.lib.DefaultGraphWalker.walk(DefaultGraphWalker.java:124)
at
org.apache.hadoop.hive.ql.lib.DefaultGraphWalker.startWalking(DefaultGraphWalker.java:101)
at
org.apache.hadoop.hive.ql.optimizer.physical.MetadataOnlyOptimizer.resolve(MetadataOnlyOptimizer.java:175)
at
org.apache.hadoop.hive.ql.optimizer.physical.PhysicalOptimizer.optimize(PhysicalOptimizer.java:79)
at
org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.genMapRedTasks(SemanticAnalyzer.java:8426)
at
org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.analyzeInternal(SemanticAnalyzer.java:8789)
at
org.apache.hadoop.hive.ql.parse.BaseSemanticAnalyzer.analyze(BaseSemanticAnalyzer.java:278)
at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:433)
at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:337)
at org.apache.hadoop.hive.ql.Driver.run(Driver.java:902)
at
org.apache.hadoop.hive.cli.CliDriver.processLocalCmd(CliDriver.java:310)
at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:231)
at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:466)
at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:819)
at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:674)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke
