[HDFS-8867] Enable optimized block reports

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.7.0
• Fix Version/s: 2.8.0, 2.7.2, 3.0.0-alpha1
• Target Version/s: 2.7.2
• Hadoop Flags: Reviewed
• Assignee: Daryn Sharp
• Reporter: Rushabh Shah
• Created: 06/Aug/15 20:57
• Updated: 06/Jan/17 07:37
• Resolved: 19/Aug/15 17:42

Description

Opening this ticket on behalf of daryn
HDFS-7435 introduced a more efficiently encoded block report format designed to improve performance and reduce GC load on the NN and DNs. The NN is not advertising this capability to the DNs so old-style reports are still being used.

Issue Links

• relates to: HDFS-9221 HdfsServerConstants#ReplicaState#getState should avoid calling values() since it creates a temporary array