Charan Reddy Guttapalem created BOOKKEEPER-1034:
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Summary: When all disks are full, start Bookie in RO mode if RO
mode is enabled
Key: BOOKKEEPER-1034
URL: https://issues.apache.org/jira/browse/BOOKKEEPER-1034
Project: Bookkeeper
Issue Type: New Feature
Reporter: Charan Reddy Guttapalem
Assignee: Charan Reddy Guttapalem
Priority: Minor
- When all disks are full start Bookie in RO mode if RO mode is enabled
- This will work only if "isForceGCAllowWhenNoSpace" is allowed, since
LedgerDirsManager.getWritableLedgerDirsForNewLog will be able to find new
writableLedgerDir even when all disks are full.
- If bookie has died abruptly then it may have missed flushing EntryMemtable and
IndexInMemoryPageManager. So next time when it starts when disc is full
it fails to create index file and it shuts down. So Bookie should be able to
create index file though it has reached the diskusagethreshold, while starting
the Bookie in Readonly Mode. But ofcourse there should be some config to
safeguard when disk usable space is so low.
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