sivabalan narayanan created HUDI-2842:
-----------------------------------------
Summary: AbstractLogRecordReader does not handle rollback with
multi writers
Key: HUDI-2842
URL: https://issues.apache.org/jira/browse/HUDI-2842
Project: Apache Hudi
Issue Type: Bug
Affects Versions: 0.10.0
Reporter: sivabalan narayanan
The way we handle rollback blocks in AbstractLogRecordReader is below:
Once we encounter the rollback block, we walk back to previous log blocks to
get hold of the blocks that needs to be rolledback. Whenever the instant time
of a block differs from what the rollback block refers to, we wrap up the
rollback block handling. This may not hold good with multi-writer scenario.
DC1: logBlock1
DC2: logBlock2 // failed mid way.
DC3: logBlock3
Rollback command block: rollback of DC2.
When handling the rollback command block, with DC3 we bail since the instant
time (DC3) does not match DC2 i.e. the commit being rolledback by DC4.
--
This message was sent by Atlassian Jira
(v8.20.1#820001)
