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https://issues.apache.org/jira/browse/PHOENIX-5748?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kadir OZDEMIR updated PHOENIX-5748:
-----------------------------------
Attachment: PHOENIX-5748-4.x.001.patch
> Simplify index update generation code for consistent global indexes
> --------------------------------------------------------------------
>
> Key: PHOENIX-5748
> URL: https://issues.apache.org/jira/browse/PHOENIX-5748
> Project: Phoenix
> Issue Type: Improvement
> Reporter: Kadir OZDEMIR
> Assignee: Kadir OZDEMIR
> Priority: Major
> Fix For: 5.1.1, 4.14.4, 4.16.0
>
> Attachments: PHOENIX-5748-4.x-HBase-1.5.001.patch,
> PHOENIX-5748-4.x.001.patch
>
>
> The implementation of the new global index design by PHOENIX-5156 essentially
> introduced two coprocessors, IndexRegionObserver and GlobalIndexChecker.
> IndexRegionObserver is the counterpart of the existing Indexer coprocessor
> that the previous global indexing feature uses. It implements the indexing
> write path. GlobalIndexChecker implements the read verification and read
> repair that happens on the read path. One of the main objectives of the
> design behind new global indexing was to leverage as much existing indexing
> code as possible. This objective has been achieved greatly as the entire
> index table update generation code implemented by various classes (including
> PhoenixIndexBuilder, CachedLocalTable, NonTxIndexBuilder, IndexUpdateManager,
> LocalTableState, ScannerBuilder, IndexMemStore and PhoenixIndexCodec) is
> leveraged as it is mainly. This objective has served us well to deliver the
> new indexing feature quickly. The leveraged code is very complex, over
> engineered, and inefficient, and is not bug free. It is very hard to
> maintain. It is time to replace the complex set of classes with something
> drastically simpler and more efficient for the new design.
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