[LUCENE-425] "Cannot rename segments.new to segments"

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Duplicate
• Affects Version/s: 1.4
• Component/s: core/index

Environment

Operating System: Windows XP
Platform: PC

• Bugzilla Id: 36241
• Assignee: Unassigned
• Reporter: Mikko Noromaa
• Created: 18/Aug/05 21:26
• Updated: 28/Aug/22 11:23
• Resolved: 10/Nov/06 11:24

Description

AddDocument periodically fails with "Cannot rename segments.new to segments".
Sometimes it happens after 10,000 documents, sometimes after 200,000 documents.

My index is placed on a FAT partition. My Lucene version is 1.4.3. I am using
a single IndexWriter object and doing all AddDocuments calls serially from a
single thread.

I saw some discussion about this problem in the mailing lists, but looks like
the problem wasn't completely eliminated yet.

My suggested solutions are as follows:

• If renameTo() fails, wait some time and retry. After this, apply the other
  methods that are now in FSDirectory.java. Retry them as well after waiting for
  some time.

• In the IndexWriter constructor, check for 'segments.new' if 'segments'
  cannot be found. This would allow recovery if FSDirectory failed on a previous
  run. Now I have to write the recovery code myself outside of Lucene.