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From "Thomas Mueller (JIRA)" <j...@apache.org>
Subject [jira] [Created] (OAK-3834) AsyncIndexUpdate default async lease timeout is (too?) long
Date Tue, 05 Jan 2016 09:56:39 GMT
Thomas Mueller created OAK-3834:

             Summary: AsyncIndexUpdate default async lease timeout is (too?) long
                 Key: OAK-3834
                 URL: https://issues.apache.org/jira/browse/OAK-3834
             Project: Jackrabbit Oak
          Issue Type: Improvement
          Components: query
            Reporter: Thomas Mueller

Oak ensures the async indexes are updated only in one cluster node, using a lease mechanism
in oak-core, org.apache.jackrabbit.oak.plugins.index, AsyncIndexUpdate, DEFAULT_ASYNC_TIMEOUT.
The default is 15 minutes (system property "oak.async.lease.timeout", default "15").

After killing the process or (when using OSGi) updating the Oak bundle, sometimes the index
is not updated for 15 minutes. 

15 minutes is quite long. What are the risks of changing this to 1 minutes?

According to some tests, the timeout mechanism is also used with the segment store, even thought
there can not be multiple cluster nodes. I thought the timeout mechanism is only used with
the document store?

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