[jira] [Created] (OAK-2719) Warn about local copy size different than remote copy in oak-lucene with copyOnRead enabled

["Chetan Mehrotra (JIRA)" <ji...@apache.org>]

Chetan Mehrotra created OAK-2719:
------------------------------------

             Summary: Warn about local copy size different than remote copy in oak-lucene with copyOnRead enabled
                 Key: OAK-2719
                 URL: https://issues.apache.org/jira/browse/OAK-2719
             Project: Jackrabbit Oak
          Issue Type: Bug
          Components: oak-lucene
            Reporter: Chetan Mehrotra
            Assignee: Chetan Mehrotra
            Priority: Minor
             Fix For: 1.3.0


At times following warning is seen in logs

{noformat}
31.03.2015 14:04:57.610 *WARN* [pool-6-thread-7] org.apache.jackrabbit.oak.plugins.index.lucene.IndexCopier Found local copy for _0.cfs in NIOFSDirectory@/path/to/index/e5a943cdec3000bd8ce54924fd2070ab5d1d35b9ecf530963a3583d43bf28293/1 lockFactory=NativeFSLockFactory@/path/to/index/e5a943cdec3000bd8ce54924fd2070ab5d1d35b9ecf530963a3583d43bf28293/1 but size of local 1040384 differs from remote 1958385. Content would be read from remote file only
{noformat}

The file length check provides a weak check around index file consistency. In some cases this warning is misleading. For e.g. 

# Index version Rev1 - Task submitted to copy index file F1 
# Index updated to Rev2 - Directory bound to Rev1 is closed
# Read is performed with Rev2 for F1 - Here as the file would be locally created the size would be different as the copying is in progress

In such a case the logic should ensure that once copy is done the local file gets used



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)