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Posted to dev@pig.apache.org by "Ankur (JIRA)" <ji...@apache.org> on 2009/10/29 12:24:59 UTC
[jira] Created: (PIG-1060) MultiQuery optimization throws error for
multi-level splits
MultiQuery optimization throws error for multi-level splits
-----------------------------------------------------------
Key: PIG-1060
URL: https://issues.apache.org/jira/browse/PIG-1060
Project: Pig
Issue Type: Bug
Affects Versions: 0.5.0
Reporter: Ankur
Consider the following scenario :-
1. Multi-level splits in the map plan.
2. Each split branch further progressing across a local-global rearrange.
3. Output of each of these finally merged via a UNION.
MultiQuery optimizer throws the following error in such a case:
"ERROR 2146: Internal Error. Inconsistency in key index found during optimization."
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[jira] Commented: (PIG-1060) MultiQuery optimization throws error
for multi-level splits
Posted by "Viraj Bhat (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/PIG-1060?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12773744#action_12773744 ]
Viraj Bhat commented on PIG-1060:
---------------------------------
Hi Ankur and Richard,
I have a script which demonstrates a similar problem, but can be solved by using the -M option. This script can reproduce the problem even without the UNION operator , but it has properties 1 and 2 of the original problem description.
Try commenting out the F alias. It works fine.
{code}
ORGINALDATA = load '/user/viraj/somedata.txt' using PigStorage() as (col1, col2, col3, col4, col5, col6, col7, col8);
--Check data
A = foreach ORGINALDATA generate col1, col2, col3, col4, col5, col6;
B = group A all;
C = foreach B generate COUNT(A);
store C into '/user/viraj/result1';
D = filter A by (col1 == col2) or (col1 == col3);
E = group D all;
F = foreach E generate COUNT(D);
--try commenting F
store F into '/user/viraj/result2';
G = filter D by (col4 == col5) ;
H = group G all;
I = foreach H generate COUNT(G);
store I into '/user/viraj/result3';
J = filter G by (((col6 == 'm') or (col6 == 'M')) and (col6 == 1)) or (((col6 == 'f') or (col6 == 'F')) and (col6 == 0)) or ((col6 == '') and (col6 == -1));
K = group J all;
L = foreach K generate COUNT(J);
store L into '/user/viraj/result4';
{code}
> MultiQuery optimization throws error for multi-level splits
> -----------------------------------------------------------
>
> Key: PIG-1060
> URL: https://issues.apache.org/jira/browse/PIG-1060
> Project: Pig
> Issue Type: Bug
> Affects Versions: 0.5.0
> Reporter: Ankur
> Assignee: Richard Ding
>
> Consider the following scenario :-
> 1. Multi-level splits in the map plan.
> 2. Each split branch further progressing across a local-global rearrange.
> 3. Output of each of these finally merged via a UNION.
> MultiQuery optimizer throws the following error in such a case:
> "ERROR 2146: Internal Error. Inconsistency in key index found during optimization."
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[jira] Commented: (PIG-1060) MultiQuery optimization throws error
for multi-level splits
Posted by "Richard Ding (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/PIG-1060?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12777096#action_12777096 ]
Richard Ding commented on PIG-1060:
-----------------------------------
The release audit warnings are all from html files.
> MultiQuery optimization throws error for multi-level splits
> -----------------------------------------------------------
>
> Key: PIG-1060
> URL: https://issues.apache.org/jira/browse/PIG-1060
> Project: Pig
> Issue Type: Bug
> Affects Versions: 0.5.0
> Reporter: Ankur
> Assignee: Richard Ding
> Attachments: PIG-1060.patch
>
>
> Consider the following scenario :-
> 1. Multi-level splits in the map plan.
> 2. Each split branch further progressing across a local-global rearrange.
> 3. Output of each of these finally merged via a UNION.
> MultiQuery optimizer throws the following error in such a case:
> "ERROR 2146: Internal Error. Inconsistency in key index found during optimization."
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[jira] Assigned: (PIG-1060) MultiQuery optimization throws error
for multi-level splits
Posted by "Richard Ding (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/PIG-1060?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Richard Ding reassigned PIG-1060:
---------------------------------
Assignee: Richard Ding
> MultiQuery optimization throws error for multi-level splits
> -----------------------------------------------------------
>
> Key: PIG-1060
> URL: https://issues.apache.org/jira/browse/PIG-1060
> Project: Pig
> Issue Type: Bug
> Affects Versions: 0.5.0
> Reporter: Ankur
> Assignee: Richard Ding
>
> Consider the following scenario :-
> 1. Multi-level splits in the map plan.
> 2. Each split branch further progressing across a local-global rearrange.
> 3. Output of each of these finally merged via a UNION.
> MultiQuery optimizer throws the following error in such a case:
> "ERROR 2146: Internal Error. Inconsistency in key index found during optimization."
--
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You can reply to this email to add a comment to the issue online.
[jira] Commented: (PIG-1060) MultiQuery optimization throws error
for multi-level splits
Posted by "Richard Ding (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/PIG-1060?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12771636#action_12771636 ]
Richard Ding commented on PIG-1060:
-----------------------------------
Never mind, there is a typo in my script. Here is the stack trace:
Caused by: org.apache.pig.impl.plan.optimizer.OptimizerException: ERROR 2146: Internal Error. Inconsistency in key index found during optimization.
at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MultiQueryOptimizer.addShiftedKeyInfoIndex(MultiQueryOptimizer.java:679)
at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MultiQueryOptimizer.addShiftedKeyInfoIndex(MultiQueryOptimizer.java:686)
at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MultiQueryOptimizer.mergeOneReducePlanWithIndex(MultiQueryOptimizer.java:584)
at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MultiQueryOptimizer.mergeAllMapReduceSplittees(MultiQueryOptimizer.java:903)
at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MultiQueryOptimizer.mergeMapReduceSplittees(MultiQueryOptimizer.java:371)
at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MultiQueryOptimizer.visitMROp(MultiQueryOptimizer.java:175)
at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceOper.visit(MapReduceOper.java:209)
at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceOper.visit(MapReduceOper.java:44)
at org.apache.pig.impl.plan.ReverseDependencyOrderWalker.walk(ReverseDependencyOrderWalker.java:69)
at org.apache.pig.impl.plan.PlanVisitor.visit(PlanVisitor.java:51)
at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MultiQueryOptimizer.visit(MultiQueryOptimizer.java:90)
at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceLauncher.compile(MapReduceLauncher.java:393)
at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceLauncher.launchPig(MapReduceLauncher.java:103)
at org.apache.pig.backend.hadoop.executionengine.HExecutionEngine.execute(HExecutionEngine.java:265)
> MultiQuery optimization throws error for multi-level splits
> -----------------------------------------------------------
>
> Key: PIG-1060
> URL: https://issues.apache.org/jira/browse/PIG-1060
> Project: Pig
> Issue Type: Bug
> Affects Versions: 0.5.0
> Reporter: Ankur
> Assignee: Richard Ding
>
> Consider the following scenario :-
> 1. Multi-level splits in the map plan.
> 2. Each split branch further progressing across a local-global rearrange.
> 3. Output of each of these finally merged via a UNION.
> MultiQuery optimizer throws the following error in such a case:
> "ERROR 2146: Internal Error. Inconsistency in key index found during optimization."
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[jira] Commented: (PIG-1060) MultiQuery optimization throws error
for multi-level splits
Posted by "Daniel Dai (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/PIG-1060?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12779595#action_12779595 ]
Daniel Dai commented on PIG-1060:
---------------------------------
Patch looks good. Will commit to both trunk and 0.6 branch as it is.
> MultiQuery optimization throws error for multi-level splits
> -----------------------------------------------------------
>
> Key: PIG-1060
> URL: https://issues.apache.org/jira/browse/PIG-1060
> Project: Pig
> Issue Type: Bug
> Affects Versions: 0.5.0
> Reporter: Ankur
> Assignee: Richard Ding
> Attachments: PIG-1060.patch
>
>
> Consider the following scenario :-
> 1. Multi-level splits in the map plan.
> 2. Each split branch further progressing across a local-global rearrange.
> 3. Output of each of these finally merged via a UNION.
> MultiQuery optimizer throws the following error in such a case:
> "ERROR 2146: Internal Error. Inconsistency in key index found during optimization."
--
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You can reply to this email to add a comment to the issue online.
[jira] Commented: (PIG-1060) MultiQuery optimization throws error
for multi-level splits
Posted by "Richard Ding (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/PIG-1060?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12771555#action_12771555 ]
Richard Ding commented on PIG-1060:
-----------------------------------
Hi Ankur,
I can't reproduce the bug with the latest code in trunk. Can you please attach the log output in the bug?
Thanks,
-- Richard
> MultiQuery optimization throws error for multi-level splits
> -----------------------------------------------------------
>
> Key: PIG-1060
> URL: https://issues.apache.org/jira/browse/PIG-1060
> Project: Pig
> Issue Type: Bug
> Affects Versions: 0.5.0
> Reporter: Ankur
>
> Consider the following scenario :-
> 1. Multi-level splits in the map plan.
> 2. Each split branch further progressing across a local-global rearrange.
> 3. Output of each of these finally merged via a UNION.
> MultiQuery optimizer throws the following error in such a case:
> "ERROR 2146: Internal Error. Inconsistency in key index found during optimization."
--
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You can reply to this email to add a comment to the issue online.
[jira] Commented: (PIG-1060) MultiQuery optimization throws error
for multi-level splits
Posted by "Hadoop QA (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/PIG-1060?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12774021#action_12774021 ]
Hadoop QA commented on PIG-1060:
--------------------------------
-1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12424143/PIG-1060.patch
against trunk revision 833102.
+1 @author. The patch does not contain any @author tags.
+1 tests included. The patch appears to include 3 new or modified tests.
+1 javadoc. The javadoc tool did not generate any warning messages.
+1 javac. The applied patch does not increase the total number of javac compiler warnings.
+1 findbugs. The patch does not introduce any new Findbugs warnings.
-1 release audit. The applied patch generated 319 release audit warnings (more than the trunk's current 318 warnings).
-1 core tests. The patch failed core unit tests.
+1 contrib tests. The patch passed contrib unit tests.
Test results: http://hudson.zones.apache.org/hudson/job/Pig-Patch-h8.grid.sp2.yahoo.net/40/testReport/
Release audit warnings: http://hudson.zones.apache.org/hudson/job/Pig-Patch-h8.grid.sp2.yahoo.net/40/artifact/trunk/patchprocess/releaseAuditDiffWarnings.txt
Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Pig-Patch-h8.grid.sp2.yahoo.net/40/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Console output: http://hudson.zones.apache.org/hudson/job/Pig-Patch-h8.grid.sp2.yahoo.net/40/console
This message is automatically generated.
> MultiQuery optimization throws error for multi-level splits
> -----------------------------------------------------------
>
> Key: PIG-1060
> URL: https://issues.apache.org/jira/browse/PIG-1060
> Project: Pig
> Issue Type: Bug
> Affects Versions: 0.5.0
> Reporter: Ankur
> Assignee: Richard Ding
> Attachments: PIG-1060.patch
>
>
> Consider the following scenario :-
> 1. Multi-level splits in the map plan.
> 2. Each split branch further progressing across a local-global rearrange.
> 3. Output of each of these finally merged via a UNION.
> MultiQuery optimizer throws the following error in such a case:
> "ERROR 2146: Internal Error. Inconsistency in key index found during optimization."
--
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You can reply to this email to add a comment to the issue online.
[jira] Updated: (PIG-1060) MultiQuery optimization throws error for
multi-level splits
Posted by "Richard Ding (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/PIG-1060?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Richard Ding updated PIG-1060:
------------------------------
Attachment: PIG-1060.patch
This patch fixes the bug.
> MultiQuery optimization throws error for multi-level splits
> -----------------------------------------------------------
>
> Key: PIG-1060
> URL: https://issues.apache.org/jira/browse/PIG-1060
> Project: Pig
> Issue Type: Bug
> Affects Versions: 0.5.0
> Reporter: Ankur
> Assignee: Richard Ding
> Attachments: PIG-1060.patch
>
>
> Consider the following scenario :-
> 1. Multi-level splits in the map plan.
> 2. Each split branch further progressing across a local-global rearrange.
> 3. Output of each of these finally merged via a UNION.
> MultiQuery optimizer throws the following error in such a case:
> "ERROR 2146: Internal Error. Inconsistency in key index found during optimization."
--
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You can reply to this email to add a comment to the issue online.
[jira] Updated: (PIG-1060) MultiQuery optimization throws error for
multi-level splits
Posted by "Richard Ding (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/PIG-1060?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Richard Ding updated PIG-1060:
------------------------------
Status: Patch Available (was: Open)
> MultiQuery optimization throws error for multi-level splits
> -----------------------------------------------------------
>
> Key: PIG-1060
> URL: https://issues.apache.org/jira/browse/PIG-1060
> Project: Pig
> Issue Type: Bug
> Affects Versions: 0.5.0
> Reporter: Ankur
> Assignee: Richard Ding
> Attachments: PIG-1060.patch
>
>
> Consider the following scenario :-
> 1. Multi-level splits in the map plan.
> 2. Each split branch further progressing across a local-global rearrange.
> 3. Output of each of these finally merged via a UNION.
> MultiQuery optimizer throws the following error in such a case:
> "ERROR 2146: Internal Error. Inconsistency in key index found during optimization."
--
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You can reply to this email to add a comment to the issue online.
[jira] Updated: (PIG-1060) MultiQuery optimization throws error for
multi-level splits
Posted by "Daniel Dai (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/PIG-1060?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Daniel Dai updated PIG-1060:
----------------------------
Resolution: Fixed
Fix Version/s: 0.6.0
Hadoop Flags: [Reviewed]
Status: Resolved (was: Patch Available)
Patch committed. Thanks Richard!
> MultiQuery optimization throws error for multi-level splits
> -----------------------------------------------------------
>
> Key: PIG-1060
> URL: https://issues.apache.org/jira/browse/PIG-1060
> Project: Pig
> Issue Type: Bug
> Affects Versions: 0.5.0
> Reporter: Ankur
> Assignee: Richard Ding
> Fix For: 0.6.0
>
> Attachments: PIG-1060.patch
>
>
> Consider the following scenario :-
> 1. Multi-level splits in the map plan.
> 2. Each split branch further progressing across a local-global rearrange.
> 3. Output of each of these finally merged via a UNION.
> MultiQuery optimizer throws the following error in such a case:
> "ERROR 2146: Internal Error. Inconsistency in key index found during optimization."
--
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You can reply to this email to add a comment to the issue online.
[jira] Commented: (PIG-1060) MultiQuery optimization throws error
for multi-level splits
Posted by "Ankur (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/PIG-1060?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12771390#action_12771390 ]
Ankur commented on PIG-1060:
----------------------------
Here's a sample script to illustrate the issue. Note that sample data isn't very important here since the optimization and execution fail.
=== test.pig ====
data = LOAD 'dummy' as (name:chararray, freq:int);
filter1 = FILTER data BY freq < 5;
group1 = GROUP filter1 BY name;
proj1 = FOREACH group1 GENERATE FLATTEN(group), 'string1', SUM(filter1.freq);
filter2 = FILTER data by freq > 5;
group2 = GROUP filter2 BY name;
proj2 = FOREACH group2 GENERATE FLATTEN(group), 'string2', SUM(filter2.freq);
filter3 = FILTER filter2 by freq < 10;
group3 = GROUP filter3 By name;
proj3 = FOREACH group3 GENERATE FLATTEN(group), 'string3', SUM(filter3.freq);
filter4 = FILTER filter3 by freq > 7;
group4 = GROUP filter4 By name;
proj4 = FOREACH group4 GENERATE FLATTEN(group), 'string4', SUM(filter4.freq);
M1 = LIMIT proj1 10;
M2 = LIMIT proj2 10;
M3 = LIMIT proj3 10;
M4 = LIMIT proj4 10;
U = UNION M1, M2, M3, M4;
STORE U INTO 'res' USING PigStorage();
The dot output can dumped via command - "explain -dot -script test.pig;" to visualize the scenario.
A surprising observation is that despite turning MultiQuery off using -M, it seems that the MultiQuery optimizer is still runs and fails the script.
> MultiQuery optimization throws error for multi-level splits
> -----------------------------------------------------------
>
> Key: PIG-1060
> URL: https://issues.apache.org/jira/browse/PIG-1060
> Project: Pig
> Issue Type: Bug
> Affects Versions: 0.5.0
> Reporter: Ankur
>
> Consider the following scenario :-
> 1. Multi-level splits in the map plan.
> 2. Each split branch further progressing across a local-global rearrange.
> 3. Output of each of these finally merged via a UNION.
> MultiQuery optimizer throws the following error in such a case:
> "ERROR 2146: Internal Error. Inconsistency in key index found during optimization."
--
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You can reply to this email to add a comment to the issue online.
[jira] Updated: (PIG-1060) MultiQuery optimization throws error for
multi-level splits
Posted by "Richard Ding (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/PIG-1060?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Richard Ding updated PIG-1060:
------------------------------
Status: Open (was: Patch Available)
> MultiQuery optimization throws error for multi-level splits
> -----------------------------------------------------------
>
> Key: PIG-1060
> URL: https://issues.apache.org/jira/browse/PIG-1060
> Project: Pig
> Issue Type: Bug
> Affects Versions: 0.5.0
> Reporter: Ankur
> Assignee: Richard Ding
> Attachments: PIG-1060.patch
>
>
> Consider the following scenario :-
> 1. Multi-level splits in the map plan.
> 2. Each split branch further progressing across a local-global rearrange.
> 3. Output of each of these finally merged via a UNION.
> MultiQuery optimizer throws the following error in such a case:
> "ERROR 2146: Internal Error. Inconsistency in key index found during optimization."
--
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You can reply to this email to add a comment to the issue online.
[jira] Commented: (PIG-1060) MultiQuery optimization throws error
for multi-level splits
Posted by "Hadoop QA (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/PIG-1060?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12774115#action_12774115 ]
Hadoop QA commented on PIG-1060:
--------------------------------
-1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12424143/PIG-1060.patch
against trunk revision 833126.
+1 @author. The patch does not contain any @author tags.
+1 tests included. The patch appears to include 3 new or modified tests.
+1 javadoc. The javadoc tool did not generate any warning messages.
+1 javac. The applied patch does not increase the total number of javac compiler warnings.
+1 findbugs. The patch does not introduce any new Findbugs warnings.
-1 release audit. The applied patch generated 319 release audit warnings (more than the trunk's current 318 warnings).
+1 core tests. The patch passed core unit tests.
+1 contrib tests. The patch passed contrib unit tests.
Test results: http://hudson.zones.apache.org/hudson/job/Pig-Patch-h8.grid.sp2.yahoo.net/41/testReport/
Release audit warnings: http://hudson.zones.apache.org/hudson/job/Pig-Patch-h8.grid.sp2.yahoo.net/41/artifact/trunk/patchprocess/releaseAuditDiffWarnings.txt
Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Pig-Patch-h8.grid.sp2.yahoo.net/41/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Console output: http://hudson.zones.apache.org/hudson/job/Pig-Patch-h8.grid.sp2.yahoo.net/41/console
This message is automatically generated.
> MultiQuery optimization throws error for multi-level splits
> -----------------------------------------------------------
>
> Key: PIG-1060
> URL: https://issues.apache.org/jira/browse/PIG-1060
> Project: Pig
> Issue Type: Bug
> Affects Versions: 0.5.0
> Reporter: Ankur
> Assignee: Richard Ding
> Attachments: PIG-1060.patch
>
>
> Consider the following scenario :-
> 1. Multi-level splits in the map plan.
> 2. Each split branch further progressing across a local-global rearrange.
> 3. Output of each of these finally merged via a UNION.
> MultiQuery optimizer throws the following error in such a case:
> "ERROR 2146: Internal Error. Inconsistency in key index found during optimization."
--
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[jira] Updated: (PIG-1060) MultiQuery optimization throws error for
multi-level splits
Posted by "Richard Ding (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/PIG-1060?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Richard Ding updated PIG-1060:
------------------------------
Status: Patch Available (was: Open)
> MultiQuery optimization throws error for multi-level splits
> -----------------------------------------------------------
>
> Key: PIG-1060
> URL: https://issues.apache.org/jira/browse/PIG-1060
> Project: Pig
> Issue Type: Bug
> Affects Versions: 0.5.0
> Reporter: Ankur
> Assignee: Richard Ding
> Attachments: PIG-1060.patch
>
>
> Consider the following scenario :-
> 1. Multi-level splits in the map plan.
> 2. Each split branch further progressing across a local-global rearrange.
> 3. Output of each of these finally merged via a UNION.
> MultiQuery optimizer throws the following error in such a case:
> "ERROR 2146: Internal Error. Inconsistency in key index found during optimization."
--
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