Kadir OZDEMIR created PHOENIX-5748:
--------------------------------------
Summary: 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
Fix For: 5.1.1, 4.14.4, 4.16.0
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.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
