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Re: optimization for data cube - Pig - [mail # user]
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...Thank you very much. We're using Pig-0.9.2. I updated to 0.11 but it took an unacceptable time to compile my big pig script. With Pig-0.9.2, it's OK. I still did not find the reason. &...
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Author: Haitao Yao,
2013-04-03, 06:07
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optimization for data cube - Pig - [mail # user]
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...Hi, all I have a tuple like this: (group_a,group_b,group_c,value) and I want to calculate the values in a data cube way, which means I want to generate new tuples from the ...
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Author: Haitao Yao,
2013-04-03, 03:34
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Pig script compiling too slow with pig-0.10 and pig-0.11 - Pig - [mail # user]
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...Hi all I have a big pig script running under pig-0.9.2. While upgrading to pig 0.11 or 0.10, the script needs to be compiled for 2 hours! This is unbelievable. What new compile rules are ad...
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Author: Haitao Yao,
2013-03-06, 06:32
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Error without pig script line information - Pig - [mail # user]
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...hi, all , here's an error that has no line numbers attached: ERROR 1200: org.apache.pig.newplan.logical.expression.ScalarExpression cannot be cast to org.apache.pig.newplan.log...
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Author: Haitao Yao,
2012-12-24, 08:36
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pig support for in operator - Pig - [mail # user]
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...hi, all Can pig support in operator, like this: A = load 'test_data' as (value); B = filter A by value in (1,2,3,4,5); I think this is really useful. thanks. Haitao Yao [E...
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Author: Haitao Yao,
2012-12-14, 02:07
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[PIG-2812] Spill InternalCachedBag into only 1 file - Pig - [issue]
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...I encountered a reducer's OOM because of java.io.DeleteOnExitHook. And I found out that the InternalCachedBag creates a seperate tmp file, and the tmp files is deleted on exit. So the file d...
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http://issues.apache.org/jira/browse/PIG-2812
Author: Haitao Yao,
2012-12-04, 18:33
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Re: need compress for ObjectSerializer - Pig - [mail # user]
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...Oh , sorry , I just found it in the JIRA. thanks. Haitao Yao [EMAIL PROTECTED] weibo: @haitao_yao Skype: haitao.yao.final On 2012-11-6, at 下午12:16, Roh wrote: ...
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Author: Haitao Yao,
2012-11-06, 04:35
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need compress for ObjectSerializer - Pig - [mail # user]
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...hi, all I think we need to optimize the org.apache.pig.impl.util.ObjectSerializer, because it uses java object serialization, which wastes a lot of space, so that it causes the tasktracker ...
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Author: Haitao Yao,
2012-11-06, 04:06
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[PIG-2828] DataType.compare null - Pig - [issue]
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...While using TOP, and if the DataBag contains null value to compare, it will generate the following exception:Caused by: java.lang.NullPointerException at org.apache.pig.data.DataType.compare...
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http://issues.apache.org/jira/browse/PIG-2828
Author: Haitao Yao,
2012-10-23, 03:56
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[PIG-2917] SpillableMemoryManager memory leak for WeakReference - Pig - [issue]
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...Sine the SpillableMemoryManager subscribed the memory notifications, and hold a weak reference of all the spillable, if there's too many weak reference and the memory exceeds the threshold, ...
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http://issues.apache.org/jira/browse/PIG-2917
Author: Haitao Yao,
2012-10-01, 20:19
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