[LUCENENET-617] Deadlock caused by NativeFSLockFactory

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Lucene.Net 4.8.0
• Fix Version/s: Lucene.Net 4.8.0
• Component/s: Lucene.Net Core
• Assignee: Shad Storhaug
• Reporter: Shad Storhaug
• Created: 15/Aug/19 05:32
• Updated: 29/Dec/19 07:57
• Resolved: 29/Dec/19 07:57

Description

The NativeFSLockFactory is causing the Lucene.Net.Replicator.IndexAndTaxonomyReplicationClientTest::TestConsistencyOnExceptions() test to deadlock on .NET Framework 4.5.1.

It is also seemingly causing random failures to:

• Lucene.Net.Store.TestMockDirectoryWrapper::TestDiskFull()

I have confirmed over 15 test runs that reverting the changes from the following commits eliminates the issue without producing any side effects:

• 7f6c78570d4b7e5e4bbb8708acfe3a397822baca
• c3e7ae30de1f23ec4198c817073096e302fc7a1b
• 7f2b76a0a81c3fbe7dd5e329cbf1d6504dba9e2c

These include commits were introduced in pull request #222(https://github.com/apache/lucenenet/pull/222) and patches applied to it.

It is unknown what the impact to consumers of 4.8.0-beta00006 is, but this issue appears to be very rare judging by the tests.