[jira] [Created] (TIKA-4575) Race condition in CI windows with unzipping pf4j plugin

["Tim Allison (Jira)" <ji...@apache.org>]

Tim Allison created TIKA-4575:
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             Summary: Race condition in CI windows with unzipping pf4j plugin
                 Key: TIKA-4575
                 URL: https://issues.apache.org/jira/browse/TIKA-4575
             Project: Tika
          Issue Type: Task
            Reporter: Tim Allison


We recently had what look like race conditions in unzipping pf4j plugins in tika-app unit tests on github.

The exception looks like this:
{noformat}
org.apache.tika.pipes.core.ServerInitializationException: java.io.FileNotFoundException: D:\a\tika\tika\tika-app\target\plugins\tika-pipes-file-system-4.0.0-SNAPSHOT.zip.lock (The process cannot access the file because it is being used by another process)
	at java.base/java.io.RandomAccessFile.open0(Native Method)
	at java.base/java.io.RandomAccessFile.open(RandomAccessFile.java:344)
	at java.base/java.io.RandomAccessFile.<init>(RandomAccessFile.java:259)
	at java.base/java.io.RandomAccessFile.<init>(RandomAccessFile.java:213)
	at org.apache.tika.plugins.ThreadSafeUnzipper.unzipPlugin(ThreadSafeUnzipper.java:47)
	at org.apache.tika.plugins.TikaPluginManager.unzip(TikaPluginManager.java:135)
	at org.apache.tika.plugins.TikaPluginManager.init(TikaPluginManager.java:119)
	at org.apache.tika.plugins.TikaPluginManager.<init>(TikaPluginManager.java:97)
	at org.apache.tika.plugins.TikaPluginManager.load(TikaPluginManager.java:79)
	at org.apache.tika.pipes.core.server.PipesServer.initializeResources(PipesServer.java:455)
	at org.apache.tika.pipes.core.server.PipesServer.load(PipesServer.java:175)
	at org.apache.tika.pipes.core.server.PipesServer.main(PipesServer.java:241) {noformat}
We need to add more, ahem, safety to the ThreadSafeUnzipper.



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