[jira] [Resolved] (PHOENIX-2995) Write performance severely degrades with large number of views

["Thomas D'Silva (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/PHOENIX-2995?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Thomas D'Silva resolved PHOENIX-2995.
-------------------------------------
    Resolution: Fixed

> Write performance severely degrades with large number of views 
> ---------------------------------------------------------------
>
>                 Key: PHOENIX-2995
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-2995
>             Project: Phoenix
>          Issue Type: Bug
>            Reporter: Mujtaba Chohan
>            Assignee: Thomas D'Silva
>              Labels: Argus
>             Fix For: 4.8.1
>
>         Attachments: PHOENIX-2995-v2.patch, PHOENIX-2995-v3.patch, PHOENIX-2995-v4.patch, PHOENIX-2995-v5.patch, PHOENIX-2995-v6.patch, PHOENIX-2995.patch, create_view_and_upsert.png, image.png, image2.png, image3.png, upsert_rate.png
>
>
> Write performance for each 1K batch degrades significantly when there are *10K* views being written in random with default {{phoenix.client.maxMetaDataCacheSize}}. With all views created, upsert rate remains around 25 seconds per 1K batch i.e. ~2K rows/min upsert rate. 
> When {{phoenix.client.maxMetaDataCacheSize}} is increased to 100MB+ then view does not need to get re-resolved and upsert rate gets back to normal ~60K rows/min.
> With *100K* views and {{phoenix.client.maxMetaDataCacheSize}} set to 1GB, I wasn't able create all 100K views as upsert time for each 1K batch keeps on steadily increasing. 
> Following graph shows 1K batch upsert rate over time with variation of number of views. Rows are upserted to random views {{CREATE VIEW IF NOT EXISTS ... APPEND_ONLY_SCHEMA = true, UPDATE_CACHE_FREQUENCY=900000}} is executed before upsert statement.
> !upsert_rate.png!
> Base table is also created with {{APPEND_ONLY_SCHEMA = true, UPDATE_CACHE_FREQUENCY = 900000, AUTO_PARTITION_SEQ}}



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