[
https://issues.apache.org/jira/browse/JCS-199?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17091448#comment-17091448
]
Matthias Jordan commented on JCS-199:
-------------------------------------
Thanks for fixing this!
> Disk cache directory and files not recreated after shutdown and restart
> -----------------------------------------------------------------------
>
> Key: JCS-199
> URL: https://issues.apache.org/jira/browse/JCS-199
> Project: Commons JCS
> Issue Type: Bug
> Components: Composite Cache
> Affects Versions: jcs-2.2.1
> Reporter: Matthias Jordan
> Assignee: Thomas Vandahl
> Priority: Major
> Fix For: jcs-3.0
>
>
> h1. How to repro
> # Configure a composite cache with an indexed disk cache as the auxiliary.
> # Now in one single JVM (e.g. in a single main method), do the following:
> ## Create the cache, possibly putting something in.
> ## Note that the disk cache files are created
> ## JCS.shutdown()
> ## Remove the files of the disk cache
> ## Create the cache again.
> ## Put stuff in
> h1. What to observe
> The disk cache files are not created again.
> In fact, the logging for the first run shows output like this:
> {noformat}
> INFORMATION: Constructed cache with name [CACHE] and cache attributes [
> useLateral = true, useRemote = true, useDisk = true, maxObjs = 1,
> maxSpoolPerRun = 500, diskUsagePattern = SWAP, spoolChunkSize = 2 ]
> Jun 25, 2019 4:19:58 PM
> org.apache.commons.jcs.auxiliary.AuxiliaryCacheConfigurator
> parseCacheEventLogger
> INFORMATION: No cache event logger defined for auxiliary [jcs.auxiliary.DISK]
> Jun 25, 2019 4:19:58 PM
> org.apache.commons.jcs.auxiliary.AuxiliaryCacheConfigurator
> parseElementSerializer
> INFORMATION: Using standard serializer
> [org.apache.commons.jcs.utils.serialization.StandardSerializer@1ddf84b8] for
> auxiliary [jcs.auxiliary.DISK]
> [...]
> Jun 25, 2019 4:19:59 PM
> org.apache.commons.jcs.auxiliary.disk.indexed.IndexedDiskCache <init>
> INFORMATION: Region [CACHE] Indexed Disk Cache is alive.
> {noformat}
> The logging of the second run shows output like this:
> {noformat}
> INFORMATION: Constructed cache with name [CACHE] and cache attributes [
> useLateral = true, useRemote = true, useDisk = true, maxObjs = 1,
> maxSpoolPerRun = 500, diskUsagePattern = SWAP, spoolChunkSize = 2 ]
> {noformat}
> Please note that in the latter case the lines about initializing the
> {{IndexedDiskCache}} are missing, event though the configuration states that
> a disk cache is to be used.
> h1. What is expected
> In the second run, the disk cache files should be created again as a
> consequence of creating new auxiliary caches. It is expected that shutting
> down the JCS will shut down every subsystem.
> h1. Relevance
> The issue comes up when restarting a web API system including deleting the
> contents of the temporary directory.
> h1. Note
> The bug may be fixed by setting the {{instance}} field in
> {{CompositeCacheManager}} to null at some point during the shutdown process.
> Maybe in {{CompositeCacheManager.shutdown()}}.
>
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
