[ZEPPELIN-5540] Unexpected NPE when use hive in Flink Interpreter

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.10.1, 0.11.0
• Component/s: flink
• Assignee: Kelu Tao
• Reporter: Kelu Tao
• Created: 27/Sep/21 02:28
• Updated: 15/Nov/21 02:23
• Resolved: 28/Sep/21 06:34

Description

When we use hive catalog in flink, the failed exception message is not expected.

In method `registerHiveCatalog`, when the env 'HIVE_CONF_DIR' is not set, we expected the exception `InterpreterException("HIVE_CONF_DIR is not specified")`. But before this code scope, it will throw a NPE in line 492, because of `properties.getOrDefault("HIVE_CONF_DIR", System.getenv("HIVE_CONF_DIR"))` is null.

 

The solution is straightforward: remove the `.toString`