You are viewing a plain text version of this content. The canonical link for it is here.
Posted to dev@pig.apache.org by "Sriranjan Manjunath (JIRA)" <ji...@apache.org> on 2009/07/17 02:25:14 UTC
[jira] Created: (PIG-890) Create a sampler interface and improve
the skewed join sampler
Create a sampler interface and improve the skewed join sampler
--------------------------------------------------------------
Key: PIG-890
URL: https://issues.apache.org/jira/browse/PIG-890
Project: Pig
Issue Type: Improvement
Reporter: Sriranjan Manjunath
We need a different sampler for order by and skewed join. We thus need a better sampling interface. The design of the same is described here: http://wiki.apache.org/pig/PigSampler
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
[jira] Updated: (PIG-890) Create a sampler interface and improve
the skewed join sampler
Posted by "Sriranjan Manjunath (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/PIG-890?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Sriranjan Manjunath updated PIG-890:
------------------------------------
Attachment: sampler.patch
The attached file has the redesigned sampler interface. Skewed join now uses a trivial implementation of the poisson sampling mechanism.
> Create a sampler interface and improve the skewed join sampler
> --------------------------------------------------------------
>
> Key: PIG-890
> URL: https://issues.apache.org/jira/browse/PIG-890
> Project: Pig
> Issue Type: Improvement
> Reporter: Sriranjan Manjunath
> Attachments: sampler.patch
>
>
> We need a different sampler for order by and skewed join. We thus need a better sampling interface. The design of the same is described here: http://wiki.apache.org/pig/PigSampler
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
[jira] Updated: (PIG-890) Create a sampler interface and improve
the skewed join sampler
Posted by "Sriranjan Manjunath (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/PIG-890?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Sriranjan Manjunath updated PIG-890:
------------------------------------
Status: Patch Available (was: Open)
> Create a sampler interface and improve the skewed join sampler
> --------------------------------------------------------------
>
> Key: PIG-890
> URL: https://issues.apache.org/jira/browse/PIG-890
> Project: Pig
> Issue Type: Improvement
> Reporter: Sriranjan Manjunath
> Attachments: samplerinterface.patch
>
>
> We need a different sampler for order by and skewed join. We thus need a better sampling interface. The design of the same is described here: http://wiki.apache.org/pig/PigSampler
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
[jira] Updated: (PIG-890) Create a sampler interface and improve
the skewed join sampler
Posted by "Sriranjan Manjunath (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/PIG-890?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Sriranjan Manjunath updated PIG-890:
------------------------------------
Attachment: samplerinterface.patch
Fixed the review comments
> Create a sampler interface and improve the skewed join sampler
> --------------------------------------------------------------
>
> Key: PIG-890
> URL: https://issues.apache.org/jira/browse/PIG-890
> Project: Pig
> Issue Type: Improvement
> Reporter: Sriranjan Manjunath
> Attachments: samplerinterface.patch
>
>
> We need a different sampler for order by and skewed join. We thus need a better sampling interface. The design of the same is described here: http://wiki.apache.org/pig/PigSampler
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
[jira] Updated: (PIG-890) Create a sampler interface and improve
the skewed join sampler
Posted by "Sriranjan Manjunath (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/PIG-890?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Sriranjan Manjunath updated PIG-890:
------------------------------------
Attachment: (was: sampler.patch)
> Create a sampler interface and improve the skewed join sampler
> --------------------------------------------------------------
>
> Key: PIG-890
> URL: https://issues.apache.org/jira/browse/PIG-890
> Project: Pig
> Issue Type: Improvement
> Reporter: Sriranjan Manjunath
> Attachments: sampler.patch
>
>
> We need a different sampler for order by and skewed join. We thus need a better sampling interface. The design of the same is described here: http://wiki.apache.org/pig/PigSampler
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
[jira] Commented: (PIG-890) Create a sampler interface and improve
the skewed join sampler
Posted by "Sriranjan Manjunath (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/PIG-890?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12742136#action_12742136 ]
Sriranjan Manjunath commented on PIG-890:
-----------------------------------------
Let me know if you think that this requires a test case and I will be happy to include it.
> Create a sampler interface and improve the skewed join sampler
> --------------------------------------------------------------
>
> Key: PIG-890
> URL: https://issues.apache.org/jira/browse/PIG-890
> Project: Pig
> Issue Type: Improvement
> Reporter: Sriranjan Manjunath
> Attachments: sampler.patch
>
>
> We need a different sampler for order by and skewed join. We thus need a better sampling interface. The design of the same is described here: http://wiki.apache.org/pig/PigSampler
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
[jira] Commented: (PIG-890) Create a sampler interface and improve
the skewed join sampler
Posted by "Daniel Dai (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/PIG-890?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12745843#action_12745843 ]
Daniel Dai commented on PIG-890:
--------------------------------
In your wiki, "For an 1TB file running on nodes which have 512 MB of memory, assuming a conversion factor of 2, the number of base samples turn out to be 4000", can you give more explanation on that?
> Create a sampler interface and improve the skewed join sampler
> --------------------------------------------------------------
>
> Key: PIG-890
> URL: https://issues.apache.org/jira/browse/PIG-890
> Project: Pig
> Issue Type: Improvement
> Reporter: Sriranjan Manjunath
> Attachments: sampler.patch
>
>
> We need a different sampler for order by and skewed join. We thus need a better sampling interface. The design of the same is described here: http://wiki.apache.org/pig/PigSampler
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
[jira] Updated: (PIG-890) Create a sampler interface and improve
the skewed join sampler
Posted by "Daniel Dai (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/PIG-890?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Daniel Dai updated PIG-890:
---------------------------
Resolution: Fixed
Fix Version/s: 0.4.0
Status: Resolved (was: Patch Available)
Patch committed. Unit test failure is not related to this patch. Thanks Sri.
> Create a sampler interface and improve the skewed join sampler
> --------------------------------------------------------------
>
> Key: PIG-890
> URL: https://issues.apache.org/jira/browse/PIG-890
> Project: Pig
> Issue Type: Improvement
> Reporter: Sriranjan Manjunath
> Fix For: 0.4.0
>
> Attachments: samplerinterface.patch
>
>
> We need a different sampler for order by and skewed join. We thus need a better sampling interface. The design of the same is described here: http://wiki.apache.org/pig/PigSampler
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
[jira] Commented: (PIG-890) Create a sampler interface and improve
the skewed join sampler
Posted by "Daniel Dai (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/PIG-890?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12745830#action_12745830 ]
Daniel Dai commented on PIG-890:
--------------------------------
Comments:
1. Can you include unit test?
2. PoissonSampleLoader.java
{noformat}
try {
numSplits = Integer.valueOf(pcProps.getProperty(MAPSPLITS_COUNT));
} catch (NumberFormatException e) {
numSplits = 1;
}
{noformat}
We shall throw exception rather than continue.
Same to
{noformat}
try {
float f = (Runtime.getRuntime().maxMemory() * heapPerc) / (float) (FileLocalizer.getSize(fname) * convFactor);
baseNumSamples = (long) Math.ceil(1.0 / f);
} catch (IOException e) {
baseNumSamples = 1; // default value
}
{noformat}
3. Are PoissonSampleLoader.next and PoissonSampleLoader.bindTo the same with RandomSampleLoader? If so, we shall put them in base class rather than copy
4. For DEFAULT_SAMPLE_RATE, can you provide some other values in the comment, such as confidence 90%, 85%, and also put a link of how to get these magic numbers. I know this is Poisson cdf, but it is better to have something we can check really quick
> Create a sampler interface and improve the skewed join sampler
> --------------------------------------------------------------
>
> Key: PIG-890
> URL: https://issues.apache.org/jira/browse/PIG-890
> Project: Pig
> Issue Type: Improvement
> Reporter: Sriranjan Manjunath
> Attachments: sampler.patch
>
>
> We need a different sampler for order by and skewed join. We thus need a better sampling interface. The design of the same is described here: http://wiki.apache.org/pig/PigSampler
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
[jira] Commented: (PIG-890) Create a sampler interface and improve
the skewed join sampler
Posted by "Daniel Dai (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/PIG-890?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12750701#action_12750701 ]
Daniel Dai commented on PIG-890:
--------------------------------
+1 for the patch.
> Create a sampler interface and improve the skewed join sampler
> --------------------------------------------------------------
>
> Key: PIG-890
> URL: https://issues.apache.org/jira/browse/PIG-890
> Project: Pig
> Issue Type: Improvement
> Reporter: Sriranjan Manjunath
> Attachments: samplerinterface.patch
>
>
> We need a different sampler for order by and skewed join. We thus need a better sampling interface. The design of the same is described here: http://wiki.apache.org/pig/PigSampler
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
[jira] Commented: (PIG-890) Create a sampler interface and improve
the skewed join sampler
Posted by "Hadoop QA (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/PIG-890?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12742118#action_12742118 ]
Hadoop QA commented on PIG-890:
-------------------------------
-1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12416250/sampler.patch
against trunk revision 801865.
+1 @author. The patch does not contain any @author tags.
-1 tests included. The patch doesn't appear to include any new or modified tests.
Please justify why no tests are needed for this patch.
+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 appears to introduce 6 new Findbugs warnings.
+1 release audit. The applied patch does not increase the total number of release audit 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-minerva.apache.org/157/testReport/
Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Pig-Patch-minerva.apache.org/157/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Console output: http://hudson.zones.apache.org/hudson/job/Pig-Patch-minerva.apache.org/157/console
This message is automatically generated.
> Create a sampler interface and improve the skewed join sampler
> --------------------------------------------------------------
>
> Key: PIG-890
> URL: https://issues.apache.org/jira/browse/PIG-890
> Project: Pig
> Issue Type: Improvement
> Reporter: Sriranjan Manjunath
> Attachments: sampler.patch
>
>
> We need a different sampler for order by and skewed join. We thus need a better sampling interface. The design of the same is described here: http://wiki.apache.org/pig/PigSampler
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
[jira] Updated: (PIG-890) Create a sampler interface and improve
the skewed join sampler
Posted by "Sriranjan Manjunath (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/PIG-890?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Sriranjan Manjunath updated PIG-890:
------------------------------------
Status: Open (was: Patch Available)
> Create a sampler interface and improve the skewed join sampler
> --------------------------------------------------------------
>
> Key: PIG-890
> URL: https://issues.apache.org/jira/browse/PIG-890
> Project: Pig
> Issue Type: Improvement
> Reporter: Sriranjan Manjunath
> Attachments: sampler.patch
>
>
> We need a different sampler for order by and skewed join. We thus need a better sampling interface. The design of the same is described here: http://wiki.apache.org/pig/PigSampler
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
[jira] Commented: (PIG-890) Create a sampler interface and improve
the skewed join sampler
Posted by "Daniel Dai (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/PIG-890?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12745840#action_12745840 ]
Daniel Dai commented on PIG-890:
--------------------------------
Forget 4, I see it in [PigSampler|http://wiki.apache.org/pig/PigSampler]
> Create a sampler interface and improve the skewed join sampler
> --------------------------------------------------------------
>
> Key: PIG-890
> URL: https://issues.apache.org/jira/browse/PIG-890
> Project: Pig
> Issue Type: Improvement
> Reporter: Sriranjan Manjunath
> Attachments: sampler.patch
>
>
> We need a different sampler for order by and skewed join. We thus need a better sampling interface. The design of the same is described here: http://wiki.apache.org/pig/PigSampler
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
[jira] Commented: (PIG-890) Create a sampler interface and improve
the skewed join sampler
Posted by "Hadoop QA (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/PIG-890?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12750715#action_12750715 ]
Hadoop QA commented on PIG-890:
-------------------------------
-1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12418432/samplerinterface.patch
against trunk revision 810677.
+1 @author. The patch does not contain any @author tags.
+1 tests included. The patch appears to include 4 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 does not increase the total number of release audit 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-h7.grid.sp2.yahoo.net/10/testReport/
Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Pig-Patch-h7.grid.sp2.yahoo.net/10/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Console output: http://hudson.zones.apache.org/hudson/job/Pig-Patch-h7.grid.sp2.yahoo.net/10/console
This message is automatically generated.
> Create a sampler interface and improve the skewed join sampler
> --------------------------------------------------------------
>
> Key: PIG-890
> URL: https://issues.apache.org/jira/browse/PIG-890
> Project: Pig
> Issue Type: Improvement
> Reporter: Sriranjan Manjunath
> Attachments: samplerinterface.patch
>
>
> We need a different sampler for order by and skewed join. We thus need a better sampling interface. The design of the same is described here: http://wiki.apache.org/pig/PigSampler
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
[jira] Updated: (PIG-890) Create a sampler interface and improve
the skewed join sampler
Posted by "Sriranjan Manjunath (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/PIG-890?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Sriranjan Manjunath updated PIG-890:
------------------------------------
Status: Open (was: Patch Available)
> Create a sampler interface and improve the skewed join sampler
> --------------------------------------------------------------
>
> Key: PIG-890
> URL: https://issues.apache.org/jira/browse/PIG-890
> Project: Pig
> Issue Type: Improvement
> Reporter: Sriranjan Manjunath
> Attachments: sampler.patch
>
>
> We need a different sampler for order by and skewed join. We thus need a better sampling interface. The design of the same is described here: http://wiki.apache.org/pig/PigSampler
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
[jira] Assigned: (PIG-890) Create a sampler interface and improve
the skewed join sampler
Posted by "Alan Gates (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/PIG-890?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Alan Gates reassigned PIG-890:
------------------------------
Assignee: Sriranjan Manjunath
> Create a sampler interface and improve the skewed join sampler
> --------------------------------------------------------------
>
> Key: PIG-890
> URL: https://issues.apache.org/jira/browse/PIG-890
> Project: Pig
> Issue Type: Improvement
> Reporter: Sriranjan Manjunath
> Assignee: Sriranjan Manjunath
> Fix For: 0.4.0
>
> Attachments: samplerinterface.patch
>
>
> We need a different sampler for order by and skewed join. We thus need a better sampling interface. The design of the same is described here: http://wiki.apache.org/pig/PigSampler
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
[jira] Commented: (PIG-890) Create a sampler interface and improve
the skewed join sampler
Posted by "Hadoop QA (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/PIG-890?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12742203#action_12742203 ]
Hadoop QA commented on PIG-890:
-------------------------------
-1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12416267/sampler.patch
against trunk revision 803312.
+1 @author. The patch does not contain any @author tags.
-1 tests included. The patch doesn't appear to include any new or modified tests.
Please justify why no tests are needed for this patch.
+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 does not increase the total number of release audit 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-minerva.apache.org/159/testReport/
Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Pig-Patch-minerva.apache.org/159/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Console output: http://hudson.zones.apache.org/hudson/job/Pig-Patch-minerva.apache.org/159/console
This message is automatically generated.
> Create a sampler interface and improve the skewed join sampler
> --------------------------------------------------------------
>
> Key: PIG-890
> URL: https://issues.apache.org/jira/browse/PIG-890
> Project: Pig
> Issue Type: Improvement
> Reporter: Sriranjan Manjunath
> Attachments: sampler.patch
>
>
> We need a different sampler for order by and skewed join. We thus need a better sampling interface. The design of the same is described here: http://wiki.apache.org/pig/PigSampler
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
[jira] Updated: (PIG-890) Create a sampler interface and improve
the skewed join sampler
Posted by "Sriranjan Manjunath (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/PIG-890?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Sriranjan Manjunath updated PIG-890:
------------------------------------
Status: Patch Available (was: Open)
> Create a sampler interface and improve the skewed join sampler
> --------------------------------------------------------------
>
> Key: PIG-890
> URL: https://issues.apache.org/jira/browse/PIG-890
> Project: Pig
> Issue Type: Improvement
> Reporter: Sriranjan Manjunath
> Attachments: sampler.patch
>
>
> We need a different sampler for order by and skewed join. We thus need a better sampling interface. The design of the same is described here: http://wiki.apache.org/pig/PigSampler
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
[jira] Updated: (PIG-890) Create a sampler interface and improve
the skewed join sampler
Posted by "Sriranjan Manjunath (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/PIG-890?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Sriranjan Manjunath updated PIG-890:
------------------------------------
Status: Patch Available (was: Open)
> Create a sampler interface and improve the skewed join sampler
> --------------------------------------------------------------
>
> Key: PIG-890
> URL: https://issues.apache.org/jira/browse/PIG-890
> Project: Pig
> Issue Type: Improvement
> Reporter: Sriranjan Manjunath
> Attachments: sampler.patch
>
>
> We need a different sampler for order by and skewed join. We thus need a better sampling interface. The design of the same is described here: http://wiki.apache.org/pig/PigSampler
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
[jira] Updated: (PIG-890) Create a sampler interface and improve
the skewed join sampler
Posted by "Sriranjan Manjunath (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/PIG-890?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Sriranjan Manjunath updated PIG-890:
------------------------------------
Attachment: sampler.patch
Made some constants static to clear the findbugs warnings. This patch does not warrant a new test case since it only affects the performance of the skewed join sampler and SkewedJoin test case already handles the correctness of the join.
> Create a sampler interface and improve the skewed join sampler
> --------------------------------------------------------------
>
> Key: PIG-890
> URL: https://issues.apache.org/jira/browse/PIG-890
> Project: Pig
> Issue Type: Improvement
> Reporter: Sriranjan Manjunath
> Attachments: sampler.patch
>
>
> We need a different sampler for order by and skewed join. We thus need a better sampling interface. The design of the same is described here: http://wiki.apache.org/pig/PigSampler
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
[jira] Updated: (PIG-890) Create a sampler interface and improve
the skewed join sampler
Posted by "Sriranjan Manjunath (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/PIG-890?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Sriranjan Manjunath updated PIG-890:
------------------------------------
Attachment: (was: sampler.patch)
> Create a sampler interface and improve the skewed join sampler
> --------------------------------------------------------------
>
> Key: PIG-890
> URL: https://issues.apache.org/jira/browse/PIG-890
> Project: Pig
> Issue Type: Improvement
> Reporter: Sriranjan Manjunath
> Attachments: samplerinterface.patch
>
>
> We need a different sampler for order by and skewed join. We thus need a better sampling interface. The design of the same is described here: http://wiki.apache.org/pig/PigSampler
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.