Reporter: Olga Natkovich
>Assignee: Yan Zhou
> Fix For: 0.8.0
>
> Attachments: compress_perf_data.txt, compress_perf_data_2.txt,
> PIG-1501.patch, PIG-1501.patch, PIG-1501.patch
>
>
> We would like to understand how compressing map results as well as wel
Swati,
I happen to be working on the logical expression simplification effort
(https://issues.apache.org/jira/browse/PIG-1399), but not on the filter
split front. So I guess our interests will have some overlaps.
I think the filter logic split problem can be divided into 2 parts:
1) the filtering
7;ll add my algorithm details soon to my jira. Please take a look and
comment as you see appropriate.
Thanks,
Yan
From: Swati Jain [mailto:swat...@aggiemail.usu.edu]
Sent: Friday, July 09, 2010 11:00 PM
To: Yan Zhou
Cc: pig-dev@hadoop.apache.org
Subj
or the original form should be evaluated.
Please let me know if I miss any of your points.
Thanks,
Yan
From: Swati Jain [mailto:swat...@aggiemail.usu.edu]
Sent: Monday, July 12, 2010 11:52 AM
To: Yan Zhou
Cc: pig-dev@hadoop.apache.org
Subject: Re: PIG Logic
ks,
Swati
On Mon, Jul 12, 2010 at 3:14 PM, Yan Zhou wrote:
> Hopefully by this week. I'm still in the debugging phase of the work.
> While you are welcome to reuse some of my algorithms, I doubt you can
reuse
> the code as much as you want. It's basically for my
source C) while ( (a3+b3 > 10) OR (c2 ==5) ) stays put
below the JOIN.
Please let me know if there is a way of doing the above optimization
without
converting the original expression to CNF.
Thanks,
Swati
On Mon, Jul 12, 2010 at 4:26 PM, Yan Zhou wrote:
> I see. There looks like so
ng the above optimization
without
converting the original expression to CNF.
Thanks,
Swati
On Mon, Jul 12, 2010 at 4:26 PM, Yan Zhou wrote:
> I see. There looks like some disconnect about "Scenario 1". To me, all
> filtering logics that can be pushed above JOIN can be figured ou
What I used in logic expression simplification, where a DNF plan is
used, is a "logical expression proxy" that wraps up the original
expression in the original plan. But it is not translated to physical
plans, where I believe
extra care would be needed.
Yan
-Original Message-
From: Swati
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Yan Zhou updated PIG-1501:
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Attachment: compress_perf_data_2.txt
The data set in the last tests are small such that the performance
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Yan Zhou commented on PIG-1501:
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Unless there is any objection raised in the coming week,
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Yan Zhou commented on PIG-1501:
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The default is *not* using the compression on
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Yan Zhou updated PIG-1501:
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Attachment: PIG-1501.patch
> need to investigate the impact of compression on pig performa
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Yan Zhou commented on PIG-1518:
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The pseudo code of the combination op is as follows:
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Yan Zhou commented on PIG-1518:
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Right, map side cogroup needs the sortness of the input,
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Yan Zhou commented on PIG-1501:
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Please refer to HADOOP-3315 for overall Sequence Fil
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Yan Zhou commented on PIG-1518:
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During the merge process, any empty splits will be ski
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Yan Zhou commented on PIG-1518:
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There is a bigger question at hand. The semantic
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Yan Zhou commented on PIG-1518:
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Another approach is to mark splits as uncombinable only
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Yan Zhou commented on PIG-1518:
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One experimental result on a 15-node cluster of 2 x
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Yan Zhou commented on PIG-1518:
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The formatting of the table of the last comment is a bit
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Yan Zhou updated PIG-1518:
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Attachment: PIG-1518.patch
> multi file input format for load
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Yan Zhou commented on PIG-1518:
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In summary, the split combination's controllables ar
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Yan Zhou commented on PIG-1518:
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No. It does not work inside an optimizer as logical/phys
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Yan Zhou updated PIG-1518:
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Attachment: PIG-1518.patch
Style changes, Hudson pass, plus other minor changes. Internal Hudson results:
[exec
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Yan Zhou updated PIG-1399:
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Attachment: PIG-1399.patch
rebased on the latest trunk.
> Logical Optimizer: Expression optimizor r
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Yan Zhou updated PIG-1501:
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Attachment: PIG-1501.patch
the compression codec is configurable on gzip or lzo; plus some minor changes
> n
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Yan Zhou commented on PIG-1501:
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The internal Hudson results are as follows:
[exec
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Yan Zhou updated PIG-1399:
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Attachment: PIG-1399.patch
Internal Hudson results:
[exec] +1 overall.
[exec]
[exec] +1
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Yan Zhou updated PIG-1518:
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Attachment: PIG-1518.patch
The add method if PigSplit is removed. The debug code is left to facilitate
future
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Yan Zhou updated PIG-1518:
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Attachment: PIG-1518.patch
Fix a typo; rebase on the latest trunk.
> multi file input format for load
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Yan Zhou updated PIG-1518:
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Status: Patch Available (was: Open)
Release Note:
Feature: combine splits of sizes smaller than the
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Yan Zhou updated PIG-1518:
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Status: Open (was: Patch Available)
> multi file input format for load
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Yan Zhou updated PIG-1518:
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Status: Patch Available (was: Open)
> multi file input format for load
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Yan Zhou updated PIG-1518:
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Attachment: PIG-1518.patch
Minor polish of a debugging code inside comments
> multi file input format
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Yan Zhou updated PIG-1501:
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Attachment: PIG-1501.patch
Address the review comments, code rebasing on the latest trunk.
> need
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Yan Zhou updated PIG-1399:
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Attachment: PIG-1399.patch
rebasing on the latest trunk
> Logical Optimizer: Expression optimizor r
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Yan Zhou updated PIG-1518:
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Attachment: PIG-1518.patch
Improvement on logging info.
> multi file input format for load
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Yan Zhou updated PIG-1518:
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Status: Open (was: Patch Available)
> multi file input format for load
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Yan Zhou updated PIG-1501:
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Status: Patch Available (was: Open)
This feature will save HDFS space used to store the intermediate data used
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Yan Zhou updated PIG-1518:
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Attachment: PIG-1518.patch
> multi file input format for load
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Yan Zhou updated PIG-1518:
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Attachment: PIG-1518.patch
rebased on the latest trunk
> multi file input format for load
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Yan Zhou commented on PIG-1518:
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It is not combinable if the loader is a CollectableLoad
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Yan Zhou commented on PIG-1518:
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MergeJoinIndexer and IndexableLoadFunc are both
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Yan Zhou commented on PIG-1518:
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In summary, the following functionalities won't s
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Yan Zhou commented on PIG-1518:
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All other functionalities except for the two mentioned in
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Yan Zhou updated PIG-1399:
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Attachment: PIG-1399.patch
Addressing the review comments except for not making several optimization rules
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Yan Zhou updated PIG-1399:
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Attachment: PIG-1399.patch
rebased on the latest trunk.
> Logical Optimizer: Expression optimizor r
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Yan Zhou updated PIG-1399:
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Attachment: PIG-1399.patch
I use findbugs 1.3.9 and it finds the patch clean. The attached findbugs
results
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Yan Zhou updated PIG-1399:
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Status: Patch Available (was: Open)
Release Note:
This logical simplification contains the following
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Yan Zhou updated PIG-1501:
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Release Note:
This feature will save HDFS space used to store the intermediate data used by
PIG and potentially
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Yan Zhou updated PIG-1501:
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Release Note:
This feature will save HDFS space used to store the intermediate data used by
PIG and potentially
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Yan Zhou commented on PIG-1501:
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To be more eaccurate, the default compression would be
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Yan Zhou commented on PIG-366:
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Robert, first, thanks for your effort to pick up this fea
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Yan Zhou commented on PIG-366:
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Yes. But the original patch by Shubham had hooked the plugi
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Yan Zhou commented on PIG-366:
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One more clearification: by design example generator does
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Yan Zhou resolved PIG-239.
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Fix Version/s: 0.8.0
(was: 0.9.0)
Resolution: Cannot Reproduce
Can not reproduce
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Yan Zhou commented on PIG-366:
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Robert,
Could you put down a step-by-step instruction on ho
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Yan Zhou commented on PIG-1628:
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+1. Patch looks good.
> log this message at debu
Key: PIG-1635
URL: https://issues.apache.org/jira/browse/PIG-1635
Project: Pig
Issue Type: Bug
Components: impl
Reporter: Yan Zhou
Assignee: Yan Zhou
Priority: Minor
b = FILTER a by (( f1 > 1) AND
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Yan Zhou commented on PIG-1635:
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This is regarding a new feature (PIG-1399) added for
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Yan Zhou updated PIG-1635:
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Affects Version/s: 0.8.0
> Logical simplifier does not simplify away constants under AND and OR; af
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Yan Zhou updated PIG-1635:
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Attachment: PIG-1635.patch
> Logical simplifier does not simplify away constants under AND and OR; af
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Yan Zhou updated PIG-1635:
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Status: Patch Available (was: Open)
> Logical simplifier does not simplify away constants under AND and
/browse/PIG-1645
Project: Pig
Issue Type: Bug
Affects Versions: 0.8.0
Reporter: Yan Zhou
Assignee: Yan Zhou
Fix For: 0.8.0
The stack looks like the following:
java.lang.NullPointerException at
java.util.Arrays.binarySearch(Arrays.java
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Yan Zhou updated PIG-1518:
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Release Note:
Feature: combine splits of sizes smaller than the value of property
"pig.maxCombinedSplitSiz
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Yan Zhou commented on PIG-1645:
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The problem is that both RandomSampleLoader
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Yan Zhou commented on PIG-1635:
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test-patch results:
[exec] +1 overall.
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Yan Zhou commented on PIG-1635:
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All test-core tests also run clean.
> Logical sim
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Yan Zhou updated PIG-1645:
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Attachment: PIG-1645.patch
test-core passed.
test-patch results:
[exec] -1 overall.
[exec
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Yan Zhou updated PIG-1645:
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Status: Patch Available (was: Open)
> Using both small split combination and temporary file compression o
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Yan Zhou commented on PIG-1645:
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The possibility of failure also depends upon the b
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Yan Zhou commented on PIG-1635:
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I did a thorough check for this patch. Actually some of
Logical simplifier throws a NPE
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Key: PIG-1647
URL: https://issues.apache.org/jira/browse/PIG-1647
Project: Pig
Issue Type: Bug
Affects Versions: 0.8.0
Reporter: Yan Zhou
Assignee
Type: Bug
Affects Versions: 0.8.0
Reporter: Yan Zhou
Assignee: Yan Zhou
Fix For: 0.8.0
For instance, if a small split has block locations h1, h2 and h3; another small
split has h1, h3, h4. After combination, the composite split contains 4 block
locations
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Yan Zhou updated PIG-1635:
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Status: Resolved (was: Patch Available)
Resolution: Fixed
Patch committed to both trunk and the 0.8
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Yan Zhou updated PIG-1647:
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Attachment: PIG-1647.patch
> Logical simplifier throws a
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Yan Zhou updated PIG-1645:
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Status: Resolved (was: Patch Available)
Resolution: Fixed
Patch committed to both trunk and the 0.8
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Yan Zhou updated PIG-1647:
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Attachment: PIG-1647.patch
passes test-core.
test-patch results:
[exec] +1 overall.
[exec
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Yan Zhou updated PIG-1647:
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Status: Patch Available (was: Open)
> Logical simplifier throws a
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Yan Zhou updated PIG-1647:
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Status: Resolved (was: Patch Available)
Resolution: Fixed
Patch committed to both trunk and the 0.8
PIG class loading mishandled
Key: PIG-1651
URL: https://issues.apache.org/jira/browse/PIG-1651
Project: Pig
Issue Type: Bug
Affects Versions: 0.8.0
Reporter: Yan Zhou
Assignee
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Yan Zhou commented on PIG-1648:
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Top 5 locations with most data will be used. This has
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Yan Zhou updated PIG-1648:
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Attachment: PIG-1648.patch
> Split combination may return too many block locations to map/reduce framew
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Yan Zhou commented on PIG-1648:
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test-patch results:
[exec] +1 overall.
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Yan Zhou updated PIG-1648:
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Status: Resolved (was: Patch Available)
Resolution: Fixed
Patch committed to both trunk and the 0.8
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https://issues.apache.org/jira/browse/PIG-1648?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yan Zhou updated PIG-1648:
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Status: Patch Available (was: Open)
> Split combination may return too many block locations to map/red
Reporter: Yan Zhou
In fact, all these types of keys of values that are negative but within the
byte or short's range would have the problem.
Basic cally, a byte value of -1 & 0xff will return 255 not -1.
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Yan Zhou updated PIG-1658:
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Fix Version/s: 0.8.0
Affects Version/s: 0.8.0
> ORDER BY does not work properly on integer/short k
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https://issues.apache.org/jira/browse/PIG-1658?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yan Zhou reassigned PIG-1658:
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Assignee: Yan Zhou
> ORDER BY does not work properly on integer/short keys that are
Versions: 0.8.0
Reporter: Yan Zhou
Assignee: Daniel Dai
Fix For: 0.8.0
This has caused 6 (of 7) failures in the Zebra test
TestOrderPreserveVariableTable.
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Yan Zhou updated PIG-1658:
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Status: Patch Available (was: Open)
> ORDER BY does not work properly on integer/short keys that are
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Yan Zhou updated PIG-1658:
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Attachment: PIG-1658.patch
This problem is caused by the PIG-1295 patch.
test-core pass. Zebra's nightly
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Yan Zhou updated PIG-1658:
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Attachment: PIG-1658.patch
Add Zebra test TestMergeJoinPartial to the "pigtest" target.
> ORDE
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https://issues.apache.org/jira/browse/PIG-1659?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12917012#action_12917012
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Yan Zhou commented on PIG-1659:
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Need to make sure it is invoked after optimization in
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Yan Zhou updated PIG-1658:
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Status: Resolved (was: Patch Available)
Resolution: Fixed
Committed to both trunk and the 0.8 branch
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https://issues.apache.org/jira/browse/PIG-1057?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12771679#action_12771679
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Yan Zhou commented on PIG-1057:
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patch reviewed +1.
This patch will address the concern R
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https://issues.apache.org/jira/browse/PIG-997?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yan Zhou updated PIG-997:
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Status: Patch Available (was: Open)
> [zebra] Sorted Table Support by Ze
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Yan Zhou reassigned PIG-997:
Assignee: Yan Zhou
> [zebra] Sorted Table Support by Ze
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https://issues.apache.org/jira/browse/PIG-997?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yan Zhou updated PIG-997:
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Attachment: SortedTable.patch
> [zebra] Sorted Table Support by Ze
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https://issues.apache.org/jira/browse/PIG-1026?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yan Zhou updated PIG-1026:
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Attachment: PIG_1026.patch
> [zebra] map split returns n
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