[FLUME-1428] File Channel should not consider a file as inactive until all takes are committed.

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.2.0
• Fix Version/s: 1.3.0
• Component/s: Channel
• Assignee: Hari Shreedharan
• Reporter: Hari Shreedharan
• Created: 04/Aug/12 20:47
• Updated: 25/Aug/12 01:05
• Resolved: 24/Aug/12 21:11

Description

FlumeEventQueue removes fileID from fileIDCounts before commits are completed. See FLUME-1417 for background. This series of events would be problematic:
File ( i )
n puts
commit
n takes (file i is no longer in flume event queue fileIDCounts)
—
file roll -> current active file in directory (File i+1)
background worker kicks in -> removes file i.
Note that the commit for the n takes has not taken place.

We do keep 2 files per directory, but if a commit/rollback does not come and 2 files are rolled, we might have some issues.

Issue Links

• relates to: FLUME-1417 File Channel checkpoint can be bad leading to the channel being unable to start.