[jira] [Updated] (OAK-7116) Use JMX mode to reindex on SegmentNodeStore without requiring manual steps

["Davide Giannella (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/OAK-7116?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Davide Giannella updated OAK-7116:
----------------------------------
    Fix Version/s: 1.14.0

> Use JMX mode to reindex on SegmentNodeStore without requiring manual steps
> --------------------------------------------------------------------------
>
>                 Key: OAK-7116
>                 URL: https://issues.apache.org/jira/browse/OAK-7116
>             Project: Jackrabbit Oak
>          Issue Type: Improvement
>          Components: run
>            Reporter: Chetan Mehrotra
>            Assignee: Chetan Mehrotra
>            Priority: Major
>             Fix For: 1.12.0, 1.14.0
>
>
> oak-run indexing for SegmentNodeStore currently require following steps while performing indexing against a repository which is in use [1]
> # Create checkpoint via MBean and pass it as part of cli args
> # Perform actual indexing with read only access to repo
> # Import the index via MBean operation 
> As per current documented steps #1 and #3 are manual. This can potentially be simplified by directly using JMX operation from within oak-run as currently for accessing SegmentNodeStore oak-run needs to run on same host as actual application
> *JMX Access*
> JMX access can be done via following ways
> # Application using Oak has JMX remote 
> ## Enabled and same info provided as cli args
> ## Not enabled - In such a case we can rely on 
> ### pid and [local connection|https://stackoverflow.com/questions/13252914/how-to-connect-to-a-local-jmx-server-by-knowing-the-process-id] or [attach|https://github.com/nickman/jmxlocal]
> ### Or query all running java prcess jmx and check if SegmentNodeStore repo path is same as one provided in cli
> # Application using OAk
> *Proposed Approach*
> # Establish the JMX connection
> # Create checkpoint using the JMX connection programatically
> # Perform indexing with read only access
> # Import the index via JMX access
> With this indexing support for SegmentNodeStore would be at par with DocumentNodeStore in terms of ease of use
> [1] https://jackrabbit.apache.org/oak/docs/query/oak-run-indexing.html



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