Till Rohrmann created FLINK-25468:
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Summary: Local recovery fails if local state storage and RocksDB
working directory are not on the same volume
Key: FLINK-25468
URL: https://issues.apache.org/jira/browse/FLINK-25468
Project: Flink
Issue Type: Bug
Components: Runtime / State Backends
Affects Versions: 1.14.2, 1.13.5, 1.15.0
Reporter: Till Rohrmann
Assignee: Till Rohrmann
Fix For: 1.15.0, 1.13.6, 1.14.3
Local recovery with RocksDB fails if the state storage directory is not on the
same volume as RocksDB's working directory. The reason is that the
{{RocksDBHandle}} only tries to hard link the RocksDB files when calling
{{restoreInstanceDirectoryFromPath}}. If hard linking is not supported, then
the operation fails.
In order to harden this behaviour, I suggest to fall back to copying the files
over if hard linking fails.
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