[HBASE-19457] Debugging flaky TestTruncateTableProcedure#testRecoveryAndDoubleExecutionPreserveSplits

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.0.0-beta-1, 2.0.0
• Assignee: Apekshit Sharma
• Reporter: Apekshit Sharma
• Created: 08/Dec/17 04:25
• Updated: 01/Aug/18 06:22
• Resolved: 26/Dec/17 19:57

Description

Trying to explain the bug in a more general way where understanding of ProcedureV2 is not required.

Truncating table operation:
....
delete region states from meta
delete table state from meta
....
add new regions to meta with state null.
....crash
....recovery: TableStateManager treats table with null state as ENABLED. AM treats regions with null state as offline. Combined result - AM starts assigning the new regions from incomplete truncate operation.

Fix: Mark table as disabled instead of deleting it's state.

---

patch1
Just added some logging to help with debugging:

• 60s was too less time, increased timeout
• Added some useful log statements