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https://issues.apache.org/jira/browse/QPID-8152?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Keith Wall updated QPID-8152:
-----------------------------
Description:
Newer versions of BDB JE register {{java.nio.file.WatchService}} to detect
unexpected deletion of the data files owned by JE. BDB registers a Watcher per
Environment. In Broker-J terms this amounts to one watcher per BDB backed
virtualhost or virtualhost node.
Watchers consume operating system resources. If the resources are exceeded,
Broker-J will fail with an exception like this:
{noformat}
Caused by: java.io.IOException: User limit of inotify instances reached or too
many open files
at
sun.nio.fs.LinuxWatchService.<init>(LinuxWatchService.java:64)
at
sun.nio.fs.LinuxFileSystem.newWatchService(LinuxFileSystem.java:47)
at
com.sleepycat.je.log.FileDeletionDetector.<init>(FileDeletionDetector.java:85)
... 29 common frames omitted
{noformat}
was:
Newer versions of BDB JE register {{java.nio.file.WatchService}} to detect
unexpected deletion of the data files owned by JE.
In some poorly configured environments the user inotify limit can be breached
on virtual host/virtual host node start-up. This situation ends-up in exception
like the one below:
{noformat}
Caused by: java.io.IOException: User limit of inotify instances reached or too
many open files
at
sun.nio.fs.LinuxWatchService.<init>(LinuxWatchService.java:64)
at
sun.nio.fs.LinuxFileSystem.newWatchService(LinuxFileSystem.java:47)
at
com.sleepycat.je.log.FileDeletionDetector.<init>(FileDeletionDetector.java:85)
... 29 common frames omitted
{noformat}
Though the root of the problem is a poorly configured environment, it would be
safer to disable file deletion detection watcher by default.
> [Broker-J][BDB] Virtual host start-up fails with IOException: User limit of
> inotify instances reached or too many open files
> ----------------------------------------------------------------------------------------------------------------------------
>
> Key: QPID-8152
> URL: https://issues.apache.org/jira/browse/QPID-8152
> Project: Qpid
> Issue Type: Bug
> Components: Broker-J
> Affects Versions: qpid-java-broker-7.0.0, qpid-java-broker-7.0.3
> Reporter: Alex Rudyy
> Priority: Minor
>
> Newer versions of BDB JE register {{java.nio.file.WatchService}} to detect
> unexpected deletion of the data files owned by JE. BDB registers a Watcher
> per Environment. In Broker-J terms this amounts to one watcher per BDB
> backed virtualhost or virtualhost node.
> Watchers consume operating system resources. If the resources are exceeded,
> Broker-J will fail with an exception like this:
> {noformat}
> Caused by: java.io.IOException: User limit of inotify instances reached or
> too many open files
> at
> sun.nio.fs.LinuxWatchService.<init>(LinuxWatchService.java:64)
> at
> sun.nio.fs.LinuxFileSystem.newWatchService(LinuxFileSystem.java:47)
> at
> com.sleepycat.je.log.FileDeletionDetector.<init>(FileDeletionDetector.java:85)
> ... 29 common frames omitted
> {noformat}
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