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From Anastasia Braginsky <anas...@yahoo-inc.com>
Subject Re: Review Request 51785: [HBASE-16608] Merge for the segments in the compaction pipeline and simplifying the user interface for in-memory flush
Date Tue, 27 Sep 2016 13:37:26 GMT


> On Sept. 27, 2016, 10:03 a.m., Anoop Sam John wrote:
> > hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/MemStoreCompactor.java,
line 48
> > <https://reviews.apache.org/r/51785/diff/6/?file=1510150#file1510150line48>
> >
> >     Why changed from 4 to 2? We have 4 refs no?

We have to references compactingMemStore, versionedList. What are the other references to
count?


- Anastasia


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https://reviews.apache.org/r/51785/#review150430
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On Sept. 26, 2016, 3:27 p.m., Anastasia Braginsky wrote:
> 
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> https://reviews.apache.org/r/51785/
> -----------------------------------------------------------
> 
> (Updated Sept. 26, 2016, 3:27 p.m.)
> 
> 
> Review request for hbase.
> 
> 
> Repository: hbase-git
> 
> 
> Description
> -------
> 
> This is a step toward final compacting memstore that allowes two modes of work: index-compaction
and data-compaction. 
> 
> The index-compaction means that when the new segment is pushed into the pipeline, it
is flattened and probably merged with old segments in the pipeline. The new merge "feature"
induces no data-copy-compaction and no speculative SQM scan. 
> The compacting memstore of the data-compaction type means the usage of the data-copy-compaction.
> 
> 
> Diffs
> -----
> 
>   hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/CompactingMemStore.java
177f222 
>   hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/CompactionPipeline.java
6a13f43 
>   hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HeapMemStoreLAB.java
3ca4b0c 
>   hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/ImmutableSegment.java
12b7916 
>   hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/MemStoreCompactor.java
714ffe3 
>   hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/MemStoreCompactorIterator.java
2eafb42 
>   hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/MemStoreCompactorSegmentsIterator.java
PRE-CREATION 
>   hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/MemStoreMergerSegmentsIterator.java
PRE-CREATION 
>   hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/MemStoreSegmentsIterator.java
PRE-CREATION 
>   hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/SegmentFactory.java
510ebbd 
>   hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/VersionedSegmentsList.java
2e8bead 
>   hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestCompactingMemStore.java
211a6d8 
>   hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestCompactingToCellArrayMapMemStore.java
fefe2c1 
>   hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestPerColumnFamilyFlush.java
6bfaa59 
>   hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestWalAndCompactingMemStoreFlush.java
74826b0 
> 
> Diff: https://reviews.apache.org/r/51785/diff/
> 
> 
> Testing
> -------
> 
> 
> Thanks,
> 
> Anastasia Braginsky
> 
>


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