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From "Chetan Mehrotra (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (OAK-5368) Not configurable/Unnecessary short Lucene Observation Queue length
Date Wed, 08 Mar 2017 10:59:37 GMT

     [ https://issues.apache.org/jira/browse/OAK-5368?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Chetan Mehrotra resolved OAK-5368.
----------------------------------
       Resolution: Works for Me
    Fix Version/s:     (was: 1.8)

> Not configurable/Unnecessary short Lucene Observation Queue length
> ------------------------------------------------------------------
>
>                 Key: OAK-5368
>                 URL: https://issues.apache.org/jira/browse/OAK-5368
>             Project: Jackrabbit Oak
>          Issue Type: Improvement
>          Components: lucene
>    Affects Versions: 1.4.10
>            Reporter: Stefan Eissing
>            Assignee: Chetan Mehrotra
>            Priority: Minor
>         Attachments: LuceneIndexConfigObserver-under-load.png
>
>
> The maximum queue length in the {{LuceneIndexConfigObserver}} is hard coded to 5. This
is unreasonable short for production systems experiencing heavy load.
> Tests with a patched version resulted in observed queue length of >100 entries. This
floods warnings into the error log, produces additional load.
> The fix would be to increase the queue max, make it configurable or rely on the system
default (which can be configured).



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