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Misha Dmitriev commented on HIVE-15882:
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[~lirui] sure - the RB for the first change (string
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Misha Dmitriev commented on HIVE-15882:
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I've just measured the CPU performance impact of my changes
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Misha Dmitriev commented on HIVE-15882:
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I've measured how much memory is saved with my change. It
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Misha Dmitriev commented on HIVE-15882:
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Yes, I did take a heap dump and rerun the tool after
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Misha Dmitriev updated HIVE-15882:
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Attachment: HIVE-15882.02.patch
Uploaded the second version of the patch, with comments made in
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Misha Dmitriev commented on HIVE-15882:
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Hi [~lirui], this is a legitimate concern. Regarding the
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Misha Dmitriev reassigned HIVE-15882:
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> HS2 generating high memory pressure with many partitions and concurrent
> queries
>
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Misha Dmitriev updated HIVE-15882:
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Attachment: hs2-crash-2000p-500m-50q.txt
> HS2 generating high memory pressure with many
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Work on HIVE-15882 started by Misha Dmitriev.
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> HS2 generating high memory pressure with many partitions and concurrent
>
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Misha Dmitriev updated HIVE-15882:
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Status: Patch Available (was: In Progress)
The supplied patch de-dupes most of the duplicate
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Misha Dmitriev updated HIVE-15882:
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Attachment: HIVE-15882.01.patch
> HS2 generating high memory pressure with many partitions and
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Misha Dmitriev commented on HIVE-15882:
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For convenience, I've created a code review here:
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Misha Dmitriev commented on HIVE-15882:
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I've checked the failed tests. They either pass for me
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Misha Dmitriev commented on HIVE-15882:
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[~lirui] thank you for your constructive feedback, I hope
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Misha Dmitriev updated HIVE-15882:
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Attachment: HIVE-15882.04.patch
Addressed the most recent Rui's comments.
> HS2 generating
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Misha Dmitriev commented on HIVE-16079:
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Thank you for paying attention, [~prasanth_j] Actually, the
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Misha Dmitriev updated HIVE-15882:
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Attachment: HIVE-15882.03.patch
Attaching the 3rd version of the patch, addressing the recent
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Misha Dmitriev commented on HIVE-15882:
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The same tests fail in other builds, so they are not due to
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Misha Dmitriev updated HIVE-16079:
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Status: Open (was: Patch Available)
> HS2: high memory pressure due to duplicate Properties
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Misha Dmitriev updated HIVE-16079:
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Status: Patch Available (was: Open)
> HS2: high memory pressure due to duplicate Properties
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Misha Dmitriev commented on HIVE-16166:
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[~spena] thank you very much for the logs. I found that the
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Misha Dmitriev commented on HIVE-16166:
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I ran 'mvn test -Dtest=TestMiniLlapLocalCliDriver
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Misha Dmitriev updated HIVE-16079:
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Status: Patch Available (was: Open)
> HS2: high memory pressure due to duplicate Properties
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Misha Dmitriev updated HIVE-16166:
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Status: Patch Available (was: Open)
> HS2 may still waste up to 15% of memory on duplicate
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Misha Dmitriev commented on HIVE-16166:
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Done.
> HS2 may still waste up to 15% of memory on
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Misha Dmitriev updated HIVE-16166:
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Attachment: HIVE-16166.02.patch
Fixed the problem with a List not providing the proper
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Misha Dmitriev commented on HIVE-16166:
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@spena I ran all these tests locally, and they passed for
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Misha Dmitriev edited comment on HIVE-16166 at 3/16/17 6:53 PM:
[~spena] I
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Misha Dmitriev commented on HIVE-16166:
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Hm, the same tests failed again. Now it starts to look
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Misha Dmitriev commented on HIVE-16079:
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It looks like testCliDriver[vector_if_expr] test is broken
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Misha Dmitriev updated HIVE-16489:
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Component/s: (was: HiveServer2)
Hive
> HMS wastes 26.4% of memory due to
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Misha Dmitriev reassigned HIVE-16489:
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> HMS wastes 26.4% of memory due to dup strings in
> metastore.api.Partition.parameters
>
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Misha Dmitriev updated HIVE-16489:
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Description:
I've just analyzed an HMS heap dump. It turns out that it contains a lot of
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Misha Dmitriev updated HIVE-16079:
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Attachment: HIVE-16079.02.patch
Attached the second version of the patch, with all JDK8 methods
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Misha Dmitriev updated HIVE-16079:
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Status: Patch Available (was: Open)
> HS2: high memory pressure due to duplicate Properties
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Misha Dmitriev updated HIVE-16079:
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Status: Open (was: Patch Available)
> HS2: high memory pressure due to duplicate Properties
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Misha Dmitriev updated HIVE-16079:
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Status: Open (was: Patch Available)
> HS2: high memory pressure due to duplicate Properties
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Misha Dmitriev updated HIVE-16079:
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Attachment: HIVE-16079.03.patch
> HS2: high memory pressure due to duplicate Properties objects
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Misha Dmitriev updated HIVE-16079:
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Status: Patch Available (was: Open)
> HS2: high memory pressure due to duplicate Properties
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Misha Dmitriev commented on HIVE-16079:
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Uploaded the 3rd patch, that addresses Sergio's comments.
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Misha Dmitriev reassigned HIVE-16166:
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> HS2 may still waste up to 15% of memory on duplicate strings
>
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Misha Dmitriev updated HIVE-16166:
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Attachment: ch_2_excerpt.txt
Results of jxray analysis for duplicate strings, baseline code.
>
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Misha Dmitriev updated HIVE-16166:
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Attachment: HIVE-16166.01.patch
> HS2 may still waste up to 15% of memory on duplicate strings
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Misha Dmitriev commented on HIVE-16079:
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I've just created an RB:
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Misha Dmitriev updated HIVE-16079:
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Attachment: (was: HIVE-15882.04.patch)
> HS2: high memory pressure due to duplicate
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Misha Dmitriev updated HIVE-16079:
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Attachment: (was: HIVE-15882.01.patch)
> HS2: high memory pressure due to duplicate
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Misha Dmitriev reassigned HIVE-16079:
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> HS2: high memory pressure due to duplicate Properties objects
>
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Misha Dmitriev updated HIVE-16079:
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Description:
I've created a Hive table with 2000 partitions, each backed by two files, with
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Misha Dmitriev updated HIVE-16079:
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Attachment: (was: HIVE-15882.02.patch)
> HS2: high memory pressure due to duplicate
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Misha Dmitriev updated HIVE-16079:
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Attachment: (was: HIVE-15882.03.patch)
> HS2: high memory pressure due to duplicate
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Misha Dmitriev updated HIVE-16079:
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Attachment: HIVE-16079.01.patch
> HS2: high memory pressure due to duplicate Properties objects
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Misha Dmitriev commented on HIVE-16079:
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Hi [~ashutoshc], sorry for a delay with response - I've
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Misha Dmitriev commented on HIVE-16079:
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vector_if_expr test fails in pretty much every Hive build.
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Misha Dmitriev reassigned HIVE-17237:
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> HMS wastes 26.4% of memory due to dup strings in
> metastore.api.Partition.parameters
>
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Misha Dmitriev updated HIVE-17237:
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Attachment: HIVE-17237.01.patch
> HMS wastes 26.4% of memory due to dup strings in
>
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Misha Dmitriev updated HIVE-17237:
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Status: Patch Available (was: Open)
> HMS wastes 26.4% of memory due to dup strings in
>
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Misha Dmitriev commented on HIVE-16079:
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Thank you [~spena]. Yes, this patch contains changes that
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Misha Dmitriev commented on HIVE-17237:
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This is to save memory and improve performance.
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Misha Dmitriev updated HIVE-17237:
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Status: In Progress (was: Patch Available)
> HMS wastes 26.4% of memory due to dup strings in
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Misha Dmitriev updated HIVE-17237:
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Attachment: HIVE-17237.02.patch
> HMS wastes 26.4% of memory due to dup strings in
>
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Misha Dmitriev updated HIVE-17237:
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Status: Patch Available (was: In Progress)
Just rebased the change and submitted the new
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Misha Dmitriev commented on HIVE-17684:
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The problem with {{MapJoinMemoryExhaustionHandler}} is a
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Work on HIVE-17684 started by Misha Dmitriev.
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> HoS memory issues with MapJoinMemoryExhaustionHandler
>
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Misha Dmitriev reassigned HIVE-17684:
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Assignee: Misha Dmitriev (was: Sahil Takiar)
> HoS memory issues with
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Misha Dmitriev updated HIVE-17684:
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Attachment: HIVE-17684.01.patch
> HoS memory issues with MapJoinMemoryExhaustionHandler
>
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Misha Dmitriev updated HIVE-17684:
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Status: Patch Available (was: In Progress)
> HoS memory issues with
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Misha Dmitriev updated HIVE-17684:
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Status: Patch Available (was: In Progress)
> HoS memory issues with
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Misha Dmitriev updated HIVE-17684:
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Attachment: HIVE-17684.02.patch
> HoS memory issues with MapJoinMemoryExhaustionHandler
>
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Misha Dmitriev updated HIVE-17684:
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Status: In Progress (was: Patch Available)
> HoS memory issues with
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Misha Dmitriev commented on HIVE-17684:
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I've fixed some checkstyle warnings (several others, e.g.
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Misha Dmitriev commented on HIVE-17684:
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Thank you for taking a look, [~stakiar]. Yes, naturally
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Misha Dmitriev commented on HIVE-19041:
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Agree - in our internal heap dump analysis, the above
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Misha Dmitriev commented on HIVE-19041:
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Thank you for looking into the details, [~vihangk1] I've
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Misha Dmitriev reassigned HIVE-19668:
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> 11.8% of the heap wasted due to duplicate org.antlr.runtime.CommonToken's
>
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Misha Dmitriev updated HIVE-19668:
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Attachment: HIVE-19668.01.patch
> Over 30% of the heap wasted by duplicate
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Misha Dmitriev updated HIVE-19668:
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Status: Patch Available (was: In Progress)
> Over 30% of the heap wasted by duplicate
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Work on HIVE-19668 started by Misha Dmitriev.
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> Over 30% of the heap wasted by duplicate org.antlr.runtime.CommonToken's
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Misha Dmitriev updated HIVE-19668:
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Description:
I've recently analyzed a HS2 heap dump, obtained when there was a huge memory
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Misha Dmitriev updated HIVE-19668:
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Summary: Over 30% of the heap wasted by duplicate
org.antlr.runtime.CommonToken's and
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Misha Dmitriev updated HIVE-19668:
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Status: In Progress (was: Patch Available)
> Over 30% of the heap wasted by duplicate
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Misha Dmitriev updated HIVE-19668:
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Status: Patch Available (was: In Progress)
> Over 30% of the heap wasted by duplicate
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Misha Dmitriev updated HIVE-19668:
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Attachment: HIVE-19668.02.patch
> Over 30% of the heap wasted by duplicate
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Misha Dmitriev commented on HIVE-19937:
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[~stakiar] regarding the behavior of
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Misha Dmitriev commented on HIVE-19668:
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[~aihuaxu] I've checked the logs of failed tests, but
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https://issues.apache.org/jira/browse/HIVE-19041?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16462886#comment-16462886
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Misha Dmitriev commented on HIVE-19041:
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[~vihangk1] does the jxray report show that comments (or
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https://issues.apache.org/jira/browse/HIVE-19041?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16463236#comment-16463236
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Misha Dmitriev commented on HIVE-19041:
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[~gopalv] yes, since JDK 1.7 built-in string interning is
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Misha Dmitriev commented on HIVE-19041:
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Yes, all interned strings are kept in the JVM internal
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https://issues.apache.org/jira/browse/HIVE-19937?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16532187#comment-16532187
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Misha Dmitriev commented on HIVE-19937:
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Thank you for sharing the jxray report, [~stakiar].
If it
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https://issues.apache.org/jira/browse/HIVE-16489?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Misha Dmitriev resolved HIVE-16489.
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Resolution: Duplicate
> HMS wastes 26.4% of memory due to dup strings in
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Misha Dmitriev commented on HIVE-16489:
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Hi [~szita] - apparently yes, just closed it.
> HMS wastes
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https://issues.apache.org/jira/browse/HIVE-17684?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16319247#comment-16319247
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Misha Dmitriev commented on HIVE-17684:
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Hi [~stakiar], just a reminder that I cannot make further
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https://issues.apache.org/jira/browse/HIVE-6430?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16363134#comment-16363134
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Misha Dmitriev commented on HIVE-6430:
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Thank you [~akolb]! This is nice work of the kind I wish I can
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https://issues.apache.org/jira/browse/HIVE-17684?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16299373#comment-16299373
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Misha Dmitriev commented on HIVE-17684:
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[~stakiar] How do I run these {{TestSparkCliDriver}} tests?
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https://issues.apache.org/jira/browse/HIVE-17684?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16562445#comment-16562445
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Misha Dmitriev commented on HIVE-17684:
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[~stakiar] a large number of CLI tests failed because of
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https://issues.apache.org/jira/browse/HIVE-17684?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16562481#comment-16562481
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Misha Dmitriev commented on HIVE-17684:
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Actually, looks like some of these CLI tests fail for me
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https://issues.apache.org/jira/browse/HIVE-17684?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16564366#comment-16564366
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Misha Dmitriev commented on HIVE-17684:
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[~stakiar] tried to debug it, but not sure what's going
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https://issues.apache.org/jira/browse/HIVE-17684?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Misha Dmitriev updated HIVE-17684:
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Status: Patch Available (was: In Progress)
> HoS memory issues with
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https://issues.apache.org/jira/browse/HIVE-17684?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Misha Dmitriev updated HIVE-17684:
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Attachment: HIVE-17684.04.patch
> HoS memory issues with MapJoinMemoryExhaustionHandler
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Misha Dmitriev updated HIVE-17684:
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Status: In Progress (was: Patch Available)
> HoS memory issues with
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Misha Dmitriev commented on HIVE-17684:
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I've resumed working on this, and finally found the reason
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