[HDFS-11863] Document missing metrics for blocks count in pending IBR

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 3.0.0-alpha4
• Fix Version/s: 2.9.0, 3.0.0-alpha4
• Component/s: documentation
• Target Version/s: 2.9.0, 3.0.0-alpha4
• Hadoop Flags: Reviewed
• Assignee: Yiqun Lin
• Reporter: Yiqun Lin
• Created: 22/May/17 09:26
• Updated: 24/Apr/18 20:50
• Resolved: 22/May/17 18:26

Description

HDFS-11534 introduced some useful metrics for blocks count in pending IBR.

  @Metric("Count of blocks in pending IBR")
  private MutableGaugeLong blocksInPendingIBR;
  @Metric("Count of blocks at receiving status in pending IBR")
  private MutableGaugeLong blocksReceivingInPendingIBR;
  @Metric("Count of blocks at received status in pending IBR")
  private MutableGaugeLong blocksReceivedInPendingIBR;

It will be nice to have in the metrics documentation.

Issue Links

• relates to: HDFS-11534 Add counters for number of blocks in pending IBR