[HDFS-17476] fix: False positive "Observer Node is too far behind" due to long overflow.

• Type: Bug
• Status: Patch Available
• Priority: Critical
• Resolution: Unresolved
• Labels: pull-request-available
• Assignee: Jian Zhang
• Reporter: Jian Zhang
• Created: 17/Apr/24 16:54
• Updated: 4 days ago 05:50

Description

In the code GlobalStateIdContext#receiveRequestState(), if clientStateId is a small negative number, clientStateId-serverStateId may be greater than 

（ESTIMATED_TRANSACTIONS_PER_SECOND due to overflow
                  * TimeUnit.MILLISECONDS.toSeconds(clientWaitTime)
                  * ESTIMATED_SERVER_TIME_MULTIPLIER）,

resulting in false positives that Observer Node is too far behind.

Issue Links

• links to: GitHub Pull Request #6747