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https://issues.apache.org/jira/browse/FLINK-9739?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16561666#comment-16561666
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ASF GitHub Bot commented on FLINK-9739:
---------------------------------------
sampathBhat opened a new pull request #6452: [FLINK-9739] Regression in
supported filesystems for RocksDB
URL: https://github.com/apache/flink/pull/6452
Like mentioned in the description and comments of the bug -
The issue https://issues.apache.org/jira/browse/FLINK-9739 is due to the
refactoring of the flink Path to java Files API. Secondly the usage
File.isAbsolute() throws an java.lang.IllegalArgumentException: Relative paths
are not supported which should not have happened.
The reason why java.lang.IllegalArgumentException is thrown is -
The calling function is splitting the filepaths based on File.pathSeparator
and in linux systems the file seperator is ':' therefore if file paths given to
state.backend.rocksdb.localdir is of form file:///some/local/path then "file"
and "/some/local/path" will be considered as different path and would fail in
the below absolute path check.
Solution:
1. Since "state.backend.rocksdb.localdir" expects only local file path an
extra check can be added to see if the path contains "file". This is the change
done in this commit.
2. The other possible solution could be to revert the API change from java
File to flink Path.
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> Regression in supported filesystems for RocksDB
> -----------------------------------------------
>
> Key: FLINK-9739
> URL: https://issues.apache.org/jira/browse/FLINK-9739
> Project: Flink
> Issue Type: Bug
> Components: FileSystem, State Backends, Checkpointing
> Affects Versions: 1.5.0, 1.6.0
> Reporter: Chesnay Schepler
> Priority: Major
> Labels: pull-request-available
>
> A user reporter on the [mailing
> list|http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/Checkpointing-in-Flink-1-5-0-tt21173.html]
> has reported that the {{RocksDBStateBackend}} no longer supports GlusterFS
> mounted volumes.
> Configuring {{file:///home/abc/share}} lead to an exception that claimed the
> path to not be absolute.
> This was working fine in 1.4.2.
> In FLINK-6557 the {{RocksDBStateBackend}} was refactored to use java
> {{Files}} instead of Flink {{Paths}}, potentially causing the issue.
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