[HDFS-9787] SNNs stop uploading FSImage to ANN once isPrimaryCheckPointer changed to false.

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.0.0-alpha1
• Fix Version/s: 3.0.0-alpha1
• Component/s: ha
• Hadoop Flags: Reviewed
• Assignee: Guocui Mi
• Reporter: Guocui Mi
• Created: 10/Feb/16 01:00
• Updated: 27/Mar/19 17:46
• Resolved: 17/Feb/16 05:14

Description

SNNs stop uploading FSImage to ANN once isPrimaryCheckPointer become false.
Here is the logic to check if upload FSImage or not.
In StandbyCheckpointer.java
boolean sendRequest = isPrimaryCheckPointer || secsSinceLast >= checkpointConf.getQuietPeriod();
doCheckpoint(sendRequest);

The sendRequest is always false if isPrimaryCheckPointer is false giving secsSinceLast (~checkpointPeriod) >= checkpointConf.getQuietPeriod() (checkpointPeriod * this.quietMultiplier(default value 1.5)) always returns false.

Issue Links

• is broken by: HDFS-6440 Support more than 2 NameNodes
• relates to: HDFS-14392 Backport HDFS-9787 to branch-2