Aljoscha Krettek created FLINK-3730:
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Summary: Fix RocksDB Local Directory Initialization
Key: FLINK-3730
URL: https://issues.apache.org/jira/browse/FLINK-3730
Project: Flink
Issue Type: Bug
Components: state backends, Streaming
Reporter: Aljoscha Krettek
Assignee: Aljoscha Krettek
The test that checks whether a directory is viable is not correct and the tests
in `RocksDBStateBackendConfigTest` fail to catch them:
`testFailWhenNoLocalStorageDir()` and `testContinueOnSomeDbDirectoriesMissing()`
The problem is that the backend tests whether the dir exists or can be created.
The tests create the directory and set it to non-writable. This means that the
check accepts these. The job would only fail later when actually trying to
create a directory in the initialized data directory.
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