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Eshcar Hillel commented on HBASE-16417:
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The report of the first round of experiment is ready
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Eshcar Hillel commented on HBASE-16417:
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First I plan to experiment with what we implemented so far
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Eshcar Hillel commented on HBASE-16417:
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Thanks [~ram_krish].
AFAIK 2.0 is not released yet.
I
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Eshcar Hillel edited comment on HBASE-17294 at 12/12/16 9:11 AM:
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Dear
Eshcar Hillel created HBASE-17294:
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Summary: External Configuration for Memory Compaction
Key: HBASE-17294
URL: https://issues.apache.org/jira/browse/HBASE-17294
Project: HBase
Issue Type:
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Eshcar Hillel updated HBASE-17294:
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Description:
We would like to have a single external knob to control memstore compaction.
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Eshcar Hillel updated HBASE-17294:
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Status: Patch Available (was: Open)
> External Configuration for Memory Compaction
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Eshcar Hillel reassigned HBASE-17294:
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Assignee: Eshcar Hillel
> External Configuration for Memory Compaction
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Eshcar Hillel commented on HBASE-17294:
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Dear [~saint@gmail.com], [~anoop.hbase], [~ram_krish],
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Eshcar Hillel updated HBASE-17294:
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Attachment: HBASE-17294-V01.patch
> External Configuration for Memory Compaction
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Eshcar Hillel updated HBASE-17294:
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Attachment: HBASE-17294-V03.patch
> External Configuration for Memory Compaction
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Eshcar Hillel created HBASE-17316:
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Summary: Addendum to HBASE-17294
Key: HBASE-17316
URL: https://issues.apache.org/jira/browse/HBASE-17316
Project: HBase
Issue Type: Sub-task
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Eshcar Hillel updated HBASE-17316:
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Attachment: HBASE-17316.patch
> Addendum to HBASE-17294
> ---
>
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Eshcar Hillel updated HBASE-17316:
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Status: Patch Available (was: Open)
> Addendum to HBASE-17294
> ---
>
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Eshcar Hillel updated HBASE-17294:
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Release Note:
This patch provides a single external knob to control memstore compaction.
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Eshcar Hillel commented on HBASE-17316:
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Updated the two tests that failed during the commit of
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Eshcar Hillel commented on HBASE-17294:
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Opened HBASE-17316 with a new patch which updates the two
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Eshcar Hillel commented on HBASE-17316:
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QA passed.
[~stack] please consider committing this
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Eshcar Hillel commented on HBASE-17294:
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Working on a new patch following your comments.
Please
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Eshcar Hillel updated HBASE-17294:
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Attachment: HBASE-17294-V02.patch
> External Configuration for Memory Compaction
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Eshcar Hillel commented on HBASE-16417:
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I am not suggesting to set eager as default.
We can have
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Eshcar Hillel commented on HBASE-17434:
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No failures this time ;)
Patch V06 fixes some typo in the
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Eshcar Hillel updated HBASE-17434:
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Attachment: HBASE-17434-V06.patch
> New Synchronization Scheme for Compaction Pipeline
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Eshcar Hillel commented on HBASE-16417:
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Thanks for the comments [~anoop.hbase].
The scope of the
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Eshcar Hillel updated HBASE-16417:
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Attachment: HBASE-16417-benchmarkresults-20161205.pdf
> In-Memory MemStore Policy for
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Eshcar Hillel commented on HBASE-16417:
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Attached new benchmarks results.
This time we focus on
Eshcar Hillel created HBASE-17434:
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Summary: New Synchronization Scheme for Compaction Pipeline
Key: HBASE-17434
URL: https://issues.apache.org/jira/browse/HBASE-17434
Project: HBase
Issue
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Eshcar Hillel commented on HBASE-17434:
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The current patch implements copy-on-write in the
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Eshcar Hillel commented on HBASE-17379:
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Created a new Jira HBASE-17434 to fix the bug of
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Eshcar Hillel updated HBASE-17434:
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Status: Patch Available (was: Open)
> New Synchronization Scheme for Compaction Pipeline
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Eshcar Hillel updated HBASE-17434:
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Attachment: HBASE-17434-V01.patch
> New Synchronization Scheme for Compaction Pipeline
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Eshcar Hillel commented on HBASE-17434:
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The design of the new scheme is discussed in HBASE-17379.
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Eshcar Hillel commented on HBASE-17434:
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The problem reported in HBASE-17379 can be fixed only in
Eshcar Hillel created HBASE-17407:
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Summary: Correct update of maxFlushedSeqId in HRegion
Key: HBASE-17407
URL: https://issues.apache.org/jira/browse/HBASE-17407
Project: HBase
Issue Type:
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Eshcar Hillel commented on HBASE-17407:
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In HRegion::internalFlushCacheAndCommit() we have the
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Eshcar Hillel commented on HBASE-17379:
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Moved the discussion to HBASE-17407.
> Lack of
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Eshcar Hillel commented on HBASE-17379:
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Thanks for looking into this [~Apache9].
I am opening a
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Eshcar Hillel commented on HBASE-17407:
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Continuing the discussion started at
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Eshcar Hillel commented on HBASE-17373:
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Last patch removed all unused code.
Please commit.
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Eshcar Hillel updated HBASE-17373:
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Attachment: HBASE-17373-V04.patch
> Reverse the order of snapshot creation in the
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Eshcar Hillel updated HBASE-17373:
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Attachment: HBASE-17373-V04.patch
> Reverse the order of snapshot creation in the
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Eshcar Hillel commented on HBASE-17373:
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These are two different problems.
Here the problem was
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Eshcar Hillel commented on HBASE-17379:
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Looking at the current trunk getTailSize() is only invoked
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Eshcar Hillel commented on HBASE-17407:
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Updating the WAL is not done in one atomic step;
It
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Eshcar Hillel updated HBASE-17373:
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Attachment: HBASE-17373-V05.patch
> Reverse the order of snapshot creation in the
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Eshcar Hillel commented on HBASE-17407:
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Thanks [~stack] your explanation is very helpful (but for
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Eshcar Hillel commented on HBASE-17379:
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I went over the patch. Still it seems much more
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Eshcar Hillel commented on HBASE-17379:
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I went over the trunk code again, and I now see that
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Eshcar Hillel commented on HBASE-17379:
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Meanwhile, until we decide which way to go here is a link
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Eshcar Hillel edited comment on HBASE-17379 at 1/5/17 8:10 AM:
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I went over
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Eshcar Hillel commented on HBASE-17373:
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[~ram_krish] I think you now have good understanding of
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Eshcar Hillel commented on HBASE-17434:
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Following HBASE-17373 the drain method is not needed
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Eshcar Hillel updated HBASE-17434:
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Attachment: HBASE-17434-V03.patch
> New Synchronization Scheme for Compaction Pipeline
>
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Eshcar Hillel commented on HBASE-17434:
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V03 changes version to be volatile since it is long and
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Eshcar Hillel commented on HBASE-17434:
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This is the same as in DefaultMemstote - the active
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Eshcar Hillel commented on HBASE-17434:
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The comment by FindBugs can be ignored since the version
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Eshcar Hillel commented on HBASE-17434:
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The logic and timing of moving segments into the pipeline
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Eshcar Hillel commented on HBASE-17339:
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[~stack] I see the scheme described in HBASE-10247.
I
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Eshcar Hillel commented on HBASE-17373:
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Since HBASE-17379 is not committed yet, would it be
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Eshcar Hillel commented on HBASE-17339:
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Thanks [~enis].
What is the advantage of checking
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Eshcar Hillel commented on HBASE-17379:
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The synchronization scheme is as follows:
- use read-write
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Eshcar Hillel commented on HBASE-16421:
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[~ram_krish] have you tried using batching? if so what is
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Eshcar Hillel updated HBASE-17373:
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Attachment: HBASE-17373-V03.patch
> Reverse the order of snapshot creation in the
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Eshcar Hillel commented on HBASE-17379:
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Here is an even simpler synchronization scheme. [~stack]
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Eshcar Hillel commented on HBASE-17373:
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[~stack], [~ted_yu], other commiter watchers, please
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Eshcar Hillel commented on HBASE-17373:
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A rebase due to revert of HBASE-17081.
> Reverse the
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Eshcar Hillel edited comment on HBASE-17379 at 1/1/17 12:12 PM:
Here is
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Eshcar Hillel commented on HBASE-17379:
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Regardless of the new clone, there are additional issues
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Eshcar Hillel commented on HBASE-17379:
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The current implementation of a compacting memstore only
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Eshcar Hillel commented on HBASE-17373:
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I don't know what is the policy or rule of thumb for
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Eshcar Hillel commented on HBASE-17407:
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Here is what I read:
{code}
void abortCacheFlush(final
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Eshcar Hillel commented on HBASE-17379:
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bq. Before HBASE-17081 - you mean the problem was there?
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Eshcar Hillel updated HBASE-17434:
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Attachment: HBASE-17434-V02.patch
> New Synchronization Scheme for Compaction Pipeline
>
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Eshcar Hillel commented on HBASE-17434:
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I also prefer read-write lock over an exclusive lock when
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Eshcar Hillel commented on HBASE-17434:
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Making a copy inside the building block methods and
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Eshcar Hillel updated HBASE-17434:
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Attachment: HBASE-17434-V05.patch
> New Synchronization Scheme for Compaction Pipeline
>
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Eshcar Hillel commented on HBASE-17434:
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Thanks. So here are my answers (some are already in RB):
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Eshcar Hillel updated HBASE-17434:
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Attachment: HBASE-17434-V04.patch
> New Synchronization Scheme for Compaction Pipeline
>
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Eshcar Hillel commented on HBASE-17434:
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Java does not have pointers. It has primitive variables
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Eshcar Hillel commented on HBASE-17434:
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With the possibility of non-atomic initialization of a
Eshcar Hillel created HBASE-17339:
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Summary: Scan-Memory-First Optimization
Key: HBASE-17339
URL: https://issues.apache.org/jira/browse/HBASE-17339
Project: HBase
Issue Type: Improvement
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Eshcar Hillel commented on HBASE-17339:
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Benchmark results presented in HBASE-16417 show that this
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Eshcar Hillel commented on HBASE-16417:
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Opened a new Jira with the patch for scan-memory-first
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Eshcar Hillel commented on HBASE-17339:
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Thanks all for commenting.
Indeed this optimization would
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Eshcar Hillel updated HBASE-17339:
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Summary: Scan-Memory-First Optimization for Get Operation (was:
Scan-Memory-First
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Eshcar Hillel commented on HBASE-17339:
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Bellow is the summary of when the optimization can and
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Eshcar Hillel commented on HBASE-17081:
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Just some clarification w.r.t. which memstore is running:
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Eshcar Hillel commented on HBASE-17081:
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bq. enabling BASIC by default for all cases am not sure if
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https://issues.apache.org/jira/browse/HBASE-16421?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15782921#comment-15782921
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Eshcar Hillel commented on HBASE-16421:
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*maxscanlength*: for scans, what is the maximum number of
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Eshcar Hillel commented on HBASE-17379:
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You use read lock in flattening method since it changes
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Eshcar Hillel updated HBASE-17373:
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Attachment: HBASE-17373-V02.patch
> Reverse the order of snapshot creation in the
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Eshcar Hillel commented on HBASE-17373:
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added ASF license to new files in patch.
> Reverse the
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Eshcar Hillel commented on HBASE-17379:
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Hi
[~ted_yu] some of the changes you suggest here may
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Eshcar Hillel commented on HBASE-17379:
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If you think about it the bug was there all the time since
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Eshcar Hillel commented on HBASE-17339:
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If I understand correctly then when clients put cells into
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Eshcar Hillel commented on HBASE-17379:
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Seems the test failed with timeout, might be a deadlock.
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Eshcar Hillel commented on HBASE-17379:
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I agree that using a read write lock would be a valid
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Eshcar Hillel commented on HBASE-17373:
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It seems that parameterized tests can pass the parameters
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Eshcar Hillel commented on HBASE-16421:
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[~ram_krish] when running YCSB you can have properties
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Eshcar Hillel updated HBASE-17373:
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Attachment: HBASE-17373-V01.patch
> Reverse the order of snapshot creation in the
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