Chesnay Schepler created FLINK-6184:
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Summary: Buffer metrics can cause NPE
Key: FLINK-6184
URL: https://issues.apache.org/jira/browse/FLINK-6184
Project: Flink
Issue Type: Bug
Components: Metrics
Affects Versions: 1.3.0
Reporter: Chesnay Schepler
Priority: Blocker
Fix For: 1.3.0
The Buffer metrics defined in the TaskIOMetricGroup are created when a Task is
created. At this time, the bufferPool in the Input gates that the metrics make
use of is still null, leading to possible NPEs.
These metrics should either be created after the required objects are fully
initialized or guard this case with null checks.
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