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https://issues.apache.org/jira/browse/VFS-594?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15133214#comment-15133214
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Sam Halliday edited comment on VFS-594 at 2/4/16 10:50 PM:
-----------------------------------------------------------
ok, turns out VFS2 is **not** closing zipFiles when removing them from the
cache. this is my hack
{{{
// WORKAROUND https://issues.apache.org/jira/browse/VFS-594
def nuke(jar: FileObject) = {
jar.close()
val fs = jar.getFileSystem
val field = classOf[ZipFileSystem].getDeclaredField("zipFile")
field.setAccessible(true)
val zip = field.get(fs)
if (zip != null)
zip.asInstanceOf[ZipFile].close()
vfs.getFilesCache.clear(fs)
}
}}}
was (Author: fommil):
ok, turns out VFS2 is **not** closing zipFiles when removing them from the
cache. this is my hack
// WORKAROUND https://issues.apache.org/jira/browse/VFS-594
def nuke(jar: FileObject) = {
jar.close()
val fs = jar.getFileSystem
val field = classOf[ZipFileSystem].getDeclaredField("zipFile")
field.setAccessible(true)
val zip = field.get(fs)
if (zip != null)
zip.asInstanceOf[ZipFile].close()
vfs.getFilesCache.clear(fs)
}
> cache holds onto ZipFiles, which leak file handlers
> ---------------------------------------------------
>
> Key: VFS-594
> URL: https://issues.apache.org/jira/browse/VFS-594
> Project: Commons VFS
> Issue Type: Bug
> Affects Versions: 2.0
> Reporter: Sam Halliday
>
> The wonderful Java implementation of ZipFile opens up the file on instance
> creation. That's exceptionally wasteful on Linux but downright buggy on
> Windows, because Windows will then obtain an exclusive lock on that file.
> In ENSIME, this has the wonderful side effect of making compilation silently
> fail, because the compiler can't write out to the jar file, because it's
> being held by the IDE process.
> The references are being kept alive by the VFS cache. I'm going to try to
> disable it, as well as attempt as much manual closing of ZipFiles as I
> possibly can.
> Tracking from https://github.com/ensime/ensime-server/issues/1276
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