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https://issues.apache.org/jira/browse/PHOENIX-5494?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16980672#comment-16980672
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Hudson commented on PHOENIX-5494:
---------------------------------
SUCCESS: Integrated in Jenkins build Phoenix-4.x-HBase-1.5 #201 (See
[https://builds.apache.org/job/Phoenix-4.x-HBase-1.5/201/])
PHOENIX-5494 Batched, mutable Index updates are unnecessarily run (chenglei:
rev 0a2552ec7198dc7b7529a35e416340e4306c1a64)
* (edit)
phoenix-core/src/main/java/org/apache/phoenix/hbase/index/covered/NonTxIndexBuilder.java
* (edit)
phoenix-core/src/main/java/org/apache/phoenix/hbase/index/builder/IndexBuilder.java
* (edit)
phoenix-core/src/main/java/org/apache/phoenix/hbase/index/builder/BaseIndexBuilder.java
* (delete)
phoenix-core/src/test/java/org/apache/phoenix/hbase/index/covered/data/TestLocalTable.java
* (edit)
phoenix-core/src/test/java/org/apache/phoenix/hbase/index/covered/TestCoveredColumnIndexCodec.java
* (edit)
phoenix-core/src/main/java/org/apache/phoenix/hbase/index/builder/IndexBuildManager.java
* (edit)
phoenix-core/src/test/java/org/apache/phoenix/hbase/index/covered/LocalTableStateTest.java
* (edit)
phoenix-core/src/test/java/org/apache/phoenix/hbase/index/covered/NonTxIndexBuilderTest.java
* (add)
phoenix-core/src/main/java/org/apache/phoenix/hbase/index/covered/data/CachedLocalTable.java
* (edit)
phoenix-core/src/main/java/org/apache/phoenix/hbase/index/covered/LocalTableState.java
* (edit)
phoenix-core/src/main/java/org/apache/phoenix/hbase/index/util/IndexManagementUtil.java
* (delete)
phoenix-core/src/main/java/org/apache/phoenix/hbase/index/covered/data/LocalTable.java
* (edit)
phoenix-core/src/main/java/org/apache/phoenix/hbase/index/covered/data/LocalHBaseState.java
> Batched, mutable Index updates are unnecessarily run one-by-one
> ---------------------------------------------------------------
>
> Key: PHOENIX-5494
> URL: https://issues.apache.org/jira/browse/PHOENIX-5494
> Project: Phoenix
> Issue Type: Improvement
> Reporter: Lars Hofhansl
> Assignee: chenglei
> Priority: Major
> Labels: performance
> Attachments: 5494-4.x-HBase-1.5.txt,
> PHOENIX-5494-4.x-HBase-1.4.patch, PHOENIX-5494.master.001.patch,
> PHOENIX-5494.master.002.patch, PHOENIX-5494.master.003.patch,
> PHOENIX-5494_v3-4.x-HBase-1.4.patch, PHOENIX-5494_v6-4.x-HBase-1.4.patch,
> PHOENIX-5494_v7-4.x-HBase-1.4.patch, Screenshot_20191110_160243.png,
> Screenshot_20191110_160351.png, Screenshot_20191110_161453.png
>
> Time Spent: 5h 20m
> Remaining Estimate: 0h
>
> I just noticed that index updates on mutable tables retrieve their deletes
> (to invalidate the old index entry) one-by-one.
> For batches, this can be *the* major time spent during an index update. The
> cost is mostly incured by the repeated setup (and seeking) of the new region
> scanner (for each row).
> We can instead do a skip scan and get all updates in a single scan per region.
> (Logically that is simple, but it will require some refactoring)
> I won't be getting to this, but recording it here in case someone feels
> inclined.
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