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https://issues.apache.org/jira/browse/PHOENIX-3853?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16013051#comment-16013051
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James Taylor commented on PHOENIX-3853:
---------------------------------------
Let me work up a new patch for PHOENIX-3827. It looks to me like the
allowLocalUpdates boolean would cause the ParallelWriterIndexCommitter to write
the local indexes still (in addition to them being written through the new
mechanism). That would explain the 2x write time.
> Local Index - Writes to local index are twice as slow as global and get
> exponentially slower with PHOENIX-3827_v2 patch
> -----------------------------------------------------------------------------------------------------------------------
>
> Key: PHOENIX-3853
> URL: https://issues.apache.org/jira/browse/PHOENIX-3853
> Project: Phoenix
> Issue Type: Bug
> Affects Versions: 4.10.0
> Environment: HBase 1.3.1 4GB heap in local mode
> Reporter: Mujtaba Chohan
> Fix For: 4.11.0
>
> Attachments: batch_time.png
>
>
> HBase 1.3.1 with head of Phoenix 4.x with/without PHOENIX-3827 v2 patch
> applied. This is with immutable non-covered local/global index on a single
> column with varying batch size when writing data to base table plus index.
> !batch_time.png!
> | Batch Size | Local Index with PHOENIX-3827_v2 patch (sec)| Local Index
> without PHOENIX-3827_v2.patch (sec)| Global (sec)|
> | 100 | 0.02 | 0.03 | 0.013 |
> | 1000 | 0.3 | 0.3 | 0.13 |
> | 10000 | 4.3 | 2.6 | 1.3 |
> | 12500 | 8.1 | 3 | 1.6 |
> | 15000 | 13.3 | 3.1 | 1.9 |
> Schema and index
> {noformat}
> CREATE TABLE IF NOT EXISTS T (OID CHAR(15) NOT NULL, PKP CHAR(3) NOT NULL,
> PIH CHAR(15) NOT NULL, FD DATE NOT NULL, SB CHAR(15) NOT NULL, BJ CHAR(15),
> JR VARCHAR, FIELD VARCHAR, YM VARCHAR, WN VARCHAR, LG VARCHAR, XHJ VARCHAR,
> HF VARCHAR, GA VARCHAR, MX VARCHAR, NZ DECIMAL, JV DECIMAL, AG DATE, KV DATE,
> JK VARCHAR, DK VARCHAR, EU DATE, OE VARCHAR, DV INTEGER, IK VARCHAR
> CONSTRAINT PK PRIMARY KEY ( OID, PKP, PIH, FD DESC, SB ))
> VERSIONS=1,IMMUTABLE_ROWS=true
> CREATE INDEX IF NOT EXISTS IDXT ON T (JV)
> {noformat}
> Data CSV
> https://expirebox.com/download/1cea73af1831b5193f0539d6e3442292.html
> [~rajeshbabu], [~lhofhansl], [~jamestaylor]
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