Sihua Zhou created FLINK-8602:
---------------------------------
Summary: Accelerate recover from failover when use incremental
checkpoint
Key: FLINK-8602
URL: https://issues.apache.org/jira/browse/FLINK-8602
Project: Flink
Issue Type: Improvement
Components: State Backends, Checkpointing
Affects Versions: 1.4.0
Reporter: Sihua Zhou
Assignee: Sihua Zhou
Currently, when enable incremental checkpoint, if user change the parallelism
then `hasExtraKeys` may be `true`. If this occur, flink will loop all rocksdb
instance and iterator all data to fetch the data that fails into current
`KeyGroupRange`, this can be improved because
if a state handle's `KeyGroupRange` is fully covered by current
`KeyGroupRange`, we can open the rocksdb it corresponded directly.
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
