IndexWriter.isLocked() fails on a read-only directory
-----------------------------------------------------
Key: LUCENE-2607
URL: https://issues.apache.org/jira/browse/LUCENE-2607
Project: Lucene - Java
Issue Type: Bug
Affects Versions: 2.9.2
Reporter: Trejkaz
This appears to be a regression of some sort because the issue was only
discovered by us some time after upgrading to the 2.9 series, and was not
present when we were using 2.3 (big gap between those two, though.)
We had some code like:
{code}
if (IndexWriter.isLocked(directory))
{
IndexWriter.unlock(directory);
}
{code}
And now we get an exception when this code runs on a read-only location:
{noformat}
java.lang.RuntimeException: Failed to acquire random test lock; please verify
filesystem for lock directory 'X:\Data\Index' supports locking at
org.apache.lucene.store.NativeFSLockFactory.acquireTestLock(NativeFSLockFactory.java:99)
at
org.apache.lucene.store.NativeFSLockFactory.makeLock(NativeFSLockFactory.java:137)
at
org.apache.lucene.store.Directory.makeLock(Directory.java:131) at
org.apache.lucene.index.IndexWriter.isLocked(IndexWriter.java:5672) at
{noformat}
I think it makes more logical sense to return *false* - if locking is not
possible then it cannot be locked, therefore isLocked should always return
false.
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