Mark Payne created NIFI-6285:
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Summary: Data fails to swap in if Load Balancing Strategy is
changed while the data is swapped out
Key: NIFI-6285
URL: https://issues.apache.org/jira/browse/NIFI-6285
Project: Apache NiFi
Issue Type: Bug
Components: Core Framework
Reporter: Mark Payne
Assignee: Mark Payne
Fix For: 1.10.0
If data is swapped out in a connection, and the connection's Load Balance
Strategy is then changed, the data fails to swap back in. I see the following
log messages:
2019-05-09 15:59:54,633 WARN [main] o.a.n.controller.FileSystemSwapManager
Encountered unknown Swap File
./flowfile_repository/swap/1557431864223-9e237e10-016a-1000-06cb-e202396d758c-02cf72f0-1c0b-4771-8ef7-a708ed1d9de5.rebalance.swap;
will ignore this Swap File. This file should be cleaned up manually
2019-05-09 15:59:54,633 WARN [main] o.a.n.controller.FileSystemSwapManager
Encountered unknown Swap File
./flowfile_repository/swap/1557431862791-9e237e10-016a-1000-06cb-e202396d758c-1c0c0a53-97d3-4703-b8de-6c7d6295e23a.rebalance.swap;
will ignore this Swap File. This file should be cleaned up manually
2019-05-09 15:59:54,633 WARN [main] o.a.n.controller.FileSystemSwapManager
Encountered unknown Swap File
./flowfile_repository/swap/1557431866657-9e237e10-016a-1000-06cb-e202396d758c-a6573e52-1758-475f-a0a9-eee211bb7b26.rebalance.swap;
will ignore this Swap File. This file should be cleaned up manually
To recreate, create a cluster and queue up around 50,000 FlowFiles on each
node. Change connection's Load Balance Strategy from "Do Not Load Balance" to
"Round Robin." This results in the data that is swapped out not getting swapped
back in.
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