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Posted to issues@flink.apache.org by StephanEwen <gi...@git.apache.org> on 2017/01/04 23:31:26 UTC
[GitHub] flink pull request #3060: [FLINK-5408] [RocksDB backend] Uniquify RocksDB JN...
GitHub user StephanEwen opened a pull request:
https://github.com/apache/flink/pull/3060
[FLINK-5408] [RocksDB backend] Uniquify RocksDB JNI library path to avoid multiple classloader problem
When the RocksDB is loaded from different ClassLoaders (for example because it is in the user code jar, or loaded dynamically in tests) it may fail with an
```
java.lang.UnsatisfiedLinkError: Native Library /path/to/temp/dir/librocksdbjni-linux64.so already loaded in another classloader.
```
Apparently the JVM can handle multiple instances of the same JNI library being loaded in different class loaders, but not when coming from the same file path.
This makes sure the JNI lib path is unique to circumvent this.
The test reflectively loads different versions of the class from different class loaders to validate that.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/StephanEwen/incubator-flink rdb_loading
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/3060.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #3060
----
commit d5256a2e89004c436bc7943affaec16b91cdb56a
Author: Stephan Ewen <se...@apache.org>
Date: 2017-01-04T23:18:13Z
[FLINK-5408] [RocksDB backend] Uniquify RocksDB JNI library path to avoid multiple classloader problem
----
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[GitHub] flink issue #3060: [FLINK-5408] [RocksDB backend] Uniquify RocksDB JNI libra...
Posted by StephanEwen <gi...@git.apache.org>.
Github user StephanEwen commented on the issue:
https://github.com/apache/flink/pull/3060
Since this is a crucial fix to stabilize the master, I will merge this in the near future...
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[GitHub] flink pull request #3060: [FLINK-5408] [RocksDB backend] Uniquify RocksDB JN...
Posted by StephanEwen <gi...@git.apache.org>.
Github user StephanEwen closed the pull request at:
https://github.com/apache/flink/pull/3060
---
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enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at infrastructure@apache.org or file a JIRA ticket
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[GitHub] flink issue #3060: [FLINK-5408] [RocksDB backend] Uniquify RocksDB JNI libra...
Posted by StephanEwen <gi...@git.apache.org>.
Github user StephanEwen commented on the issue:
https://github.com/apache/flink/pull/3060
Manually merged in 3070ff9a6d9de47a4713d4b4952929f8c00043b1
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