[jira] [Created] (FLINK-8676) Memory Leak in AbstractKeyedStateBackend.applyToAllKeys() when backend is base on RocksDB

["Sihua Zhou (JIRA)" <ji...@apache.org>]

Sihua Zhou created FLINK-8676:
---------------------------------

             Summary: Memory Leak in AbstractKeyedStateBackend.applyToAllKeys() when backend is base on RocksDB
                 Key: FLINK-8676
                 URL: https://issues.apache.org/jira/browse/FLINK-8676
             Project: Flink
          Issue Type: Bug
            Reporter: Sihua Zhou
            Assignee: Sihua Zhou


`AbstractKeyedStateBackend.applyToAllKeys() ` uses backend's getKeys(stateName, namespace) to get all keys that belong to `namespace`. But, in `RocksDBKeyedStateBackend.getKeys()` if just return a object which wrap a `rocksdb iterator`, that is dangous, because rocksdb will ping the resources that belong to the iterator into memory untill iterator.close() is invoked, but it didn't invoked right now. This will lead to memory leak finally.



--
This message was sent by Atlassian JIRA
(v7.6.3#76005)