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Posted to issues@flink.apache.org by "Till Rohrmann (JIRA)" <ji...@apache.org> on 2015/02/12 14:51:11 UTC
[jira] [Created] (FLINK-1533) NullPointerException in
SlotSharingGroupAssignment.addSharedSlotAndAllocateSubSlot
Till Rohrmann created FLINK-1533:
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Summary: NullPointerException in SlotSharingGroupAssignment.addSharedSlotAndAllocateSubSlot
Key: FLINK-1533
URL: https://issues.apache.org/jira/browse/FLINK-1533
Project: Flink
Issue Type: Bug
Reporter: Till Rohrmann
The scheduler can fail with a NullPointerException if it is not possible to allocate a {{SharedSlot}} from an {{Instance}}. In the method {{Scheduler.getFreeSubSlotForTask}} the allocated {{SharedSlot}} is not checked that it is not null. This can cause a program to fail if there is a race condition in scheduling different tasks on the same instance.
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