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https://issues.apache.org/jira/browse/VFS-683?focusedWorklogId=784303&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-784303
]
ASF GitHub Bot logged work on VFS-683:
--------------------------------------
Author: ASF GitHub Bot
Created on: 23/Jun/22 16:31
Start Date: 23/Jun/22 16:31
Worklog Time Spent: 10m
Work Description: milleruntime commented on issue #2775:
URL: https://github.com/apache/accumulo/issues/2775#issuecomment-1164628473
> His suggestion was to create a script that copies the jars from HDFS to
lib/ext before starting the Accumulo processes. You might be able to use the
same script to update the jars on the local filesystem when an updated jar is
pushed into HDFS.
We could create a bash script for 1.10.3. We could include it in contrib and
mention it in the release notes and readme.
Issue Time Tracking
-------------------
Worklog Id: (was: 784303)
Time Spent: 1.5h (was: 1h 20m)
> Thread safety issue in VFSClassLoader - NullPointerException thrown
> -------------------------------------------------------------------
>
> Key: VFS-683
> URL: https://issues.apache.org/jira/browse/VFS-683
> Project: Commons VFS
> Issue Type: Bug
> Affects Versions: 2.2
> Reporter: Daryl Odnert
> Assignee: Gary D. Gregory
> Priority: Major
> Attachments: Main.java
>
> Time Spent: 1.5h
> Remaining Estimate: 0h
>
> In my application, I have two instances of the {{VFSClassLoader}}, each of
> which is being used in a distinct thread. Both {{VFSClassLoader}} instances
> refer to the same compressed file resource described by a {{FileObject}} that
> is passed to the class loader's constructor. Intermittently, the application
> throws an exception with the stack trace shown below. So, there seems to be
> either a race condition in the code or an undocumented assumption here. If it
> is unsupported for two {{VFSClassLoader}} instances to refer to the same
> resource (file), then that assumption should be documented. But if that is
> not the case, then there is a race condition bug in the implementation.
> {noformat}
> 43789 WARN {} c.a.e.u.PreferredPathClassLoader - While loading class
> org.apache.hive.jdbc.HiveDatabaseMetaData, rethrowing unexpected
> java.lang.NullPointerException: Inflater has been closed
> java.lang.NullPointerException: Inflater has been closed
> at java.util.zip.Inflater.ensureOpen(Inflater.java:389)
> at java.util.zip.Inflater.inflate(Inflater.java:257)
> at java.util.zip.InflaterInputStream.read(InflaterInputStream.java:152)
> at java.io.BufferedInputStream.read1(BufferedInputStream.java:284)
> at java.io.BufferedInputStream.read(BufferedInputStream.java:345)
> at
> org.apache.commons.vfs2.util.MonitorInputStream.read(MonitorInputStream.java:91)
> at org.apache.commons.vfs2.FileUtil.getContent(FileUtil.java:47)
> at org.apache.commons.vfs2.impl.Resource.getBytes(Resource.java:102)
> at
> org.apache.commons.vfs2.impl.VFSClassLoader.defineClass(VFSClassLoader.java:179)
> at
> org.apache.commons.vfs2.impl.VFSClassLoader.findClass(VFSClassLoader.java:150)
> at
> com.atscale.engine.utils.PreferredPathClassLoader.findClass(PreferredPathClassLoader.scala:54)
> {noformat}
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