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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.
ORDER BY does not work
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Yan Zhou commented on PIG-1659:
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Need to make sure it is invoked after optimization in both old
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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
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 keys
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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 -1
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 -1
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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 pass
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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 been
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Yan Zhou commented on PIG-1648:
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test-patch results:
[exec] +1 overall.
[exec
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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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Yan Zhou updated PIG-1648:
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Status: Patch Available (was: Open)
Split combination may return too many block locations to map/reduce
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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 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 NPE
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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
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Yan Zhou commented on PIG-1645:
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The possibility of failure also depends upon the block
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Yan Zhou commented on PIG-1635:
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I did a thorough check for this patch. Actually some
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 NPE
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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-1518:
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Release Note:
Feature: combine splits of sizes smaller than the value of property
pig.maxCombinedSplitSize
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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.
[exec
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Yan Zhou commented on PIG-1635:
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All test-core tests also run clean.
Logical simplifier does
/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 commented on PIG-1628:
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+1. Patch looks good.
log this message at debug level : 'Pig
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 (1
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Yan Zhou commented on PIG-1635:
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This is regarding a new feature (PIG-1399) added for 0.8
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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; after
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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; after
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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
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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 how
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Yan Zhou commented on PIG-366:
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Robert, first, thanks for your effort to pick up this feature
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Yan Zhou commented on PIG-366:
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Yes. But the original patch by Shubham had hooked the plugin
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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 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-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-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 rule
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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 loaders
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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 loaders
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Yan Zhou commented on PIG-1518:
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It is not combinable if the loader is a CollectableLoadFunc
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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 to investigate
on pig performance
Key: PIG-1501
URL: https://issues.apache.org/jira/browse/PIG-1501
Project: Pig
Issue Type: Test
Reporter: Olga Natkovich
Assignee: Yan
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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 loaders
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Yan Zhou updated PIG-1518:
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Status: Open (was: Patch Available)
multi file input format for loaders
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Yan Zhou updated PIG-1518:
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Status: Open (was: Patch Available)
multi file input format for loaders
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Yan Zhou updated PIG-1518:
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Status: Patch Available (was: Open)
multi file input format for loaders
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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-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 loaders
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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
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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 rule
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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
need
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Yan Zhou commented on PIG-1501:
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The internal Hudson results are as follows:
[exec] -1
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Yan Zhou updated PIG-1518:
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Attachment: PIG-1518.patch
multi file input format for loaders
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Yan Zhou commented on PIG-1518:
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In summary, the split combination's controllables are through
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Yan Zhou commented on PIG-1518:
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No. It does not work inside an optimizer as logical/physical
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Yan Zhou commented on PIG-1518:
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Another approach is to mark splits as uncombinable only when
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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 Xeon L5420
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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 off
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Yan Zhou commented on PIG-1518:
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There is a bigger question at hand. The semantics
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Yan Zhou commented on PIG-1518:
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During the merge process, any empty splits will be skipped
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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 File vs TFile
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Yan Zhou commented on PIG-1501:
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The default is *not* using the compression on the intermediate
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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 performance
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Yan Zhou commented on PIG-1518:
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The pseudo code of the combination op is as follows:
for each
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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, I'll
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Yan Zhou updated PIG-1496:
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Attachment: PIG-1496.patch
More comments in code per the reviewer's comment.
Mandatory rule
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Yan Zhou updated PIG-1496:
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Attachment: (was: PIG-1496.patch)
Mandatory rule ImplicitSplitInserter
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Yan Zhou updated PIG-1496:
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Status: Patch Available (was: Open)
Mandatory rule ImplicitSplitInserter
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Yan Zhou updated PIG-1496:
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Attachment: PIG-1496.patch
Mandatory rule ImplicitSplitInserter
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Yan Zhou commented on PIG-1518:
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In contrast with Hive, where the CombineFileInputFormat
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Yan Zhou commented on PIG-1518:
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CombinedInputFormat, in lieu of the deprecated
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Yan Zhou commented on PIG-1501:
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gzip and lzo2 are tried as the compression codecs; TFile
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Yan Zhou updated PIG-1453:
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Status: Resolved (was: Patch Available)
Resolution: Fixed
Committed to the trunk.
[zebra
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Yan Zhou updated PIG-1399:
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Attachment: (was: PIG-1399.patch)
Logical Optimizer: Expression optimizor rule
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Yan Zhou updated PIG-1399:
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Attachment: PIG-1399.patch
Logical Optimizer: Expression optimizor rule
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Yan Zhou updated PIG-1399:
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Attachment: PIG-1399.patch
Might not be appplicable to trunk yet as it depends upon a uncommitted patch
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Yan Zhou updated PIG-1399:
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Attachment: PIG-1399.patch
Logical Optimizer: Expression optimizor rule
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Yan Zhou updated PIG-1399:
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Attachment: (was: PIG-1399.patch)
Logical Optimizer: Expression optimizor rule
the JOIN (in the branch
leading up to the 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 y...@yahoo
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 commented on PIG-1399:
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A couple of additional scenarios to be simplified:
5
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Yan Zhou commented on PIG-1399:
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This work is not to optimize on the generic boolean logics
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
Subject: Re: PIG Logical Optimization: Use CNF
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 Logical Optimization: Use
On Mon, Jul 12, 2010 at 3:14 PM, Yan Zhou y...@yahoo-inc.com 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 DNF use. You might
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