[LUCENE-3237] FSDirectory.fsync() may not work properly

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Won't Fix
• Component/s: core/store
• Lucene Fields: New
• Assignee: Unassigned
• Reporter: Shai Erera
• Created: 24/Jun/11 11:17
• Updated: 28/Aug/22 12:51
• Resolved: 14/Nov/11 10:53

Description

Spinoff from LUCENE-3230. FSDirectory.fsync() opens a new RAF, sync() its FileDescriptor and closes RAF. It is not clear that this syncs whatever was written to the file by other FileDescriptors. It would be better if we do this operation on the actual RAF/FileOS which wrote the data. We can add sync() to IndexOutput and FSIndexOutput will do that.

Directory-wise, we should stop syncing on file names, and instead sync on the IOs that performed the write operations.