[HDFS-15287] HDFS rollingupgrade prepare never finishes

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Duplicate
• Affects Version/s: 2.10.0, 3.3.0
• Component/s: namenode
• Target Version/s: 3.4.0
• Hadoop Flags: Reviewed
• Assignee: Unassigned
• Reporter: Kihwal Lee
• Created: 20/Apr/20 13:34
• Updated: 27/Jan/24 03:25
• Resolved: 08/Jun/20 22:02

Description

After HDFS-12979, the prepare step of rolling upgrade does not work. This is because it added additional check for sufficient time passing since last checkpoint. Since RU rollback image creation and upload can happen any time, uploading of rollback image never succeeds. For a new cluster deployed for testing, it might work since it never checkpointed before.

It was found that this check is disabled for unit tests, defeating the very purpose of testing.

Issue Links

• is broken by: HDFS-12979 StandbyNode should upload FsImage to ObserverNode after checkpointing.
• is duplicated by: HDFS-15036 Active NameNode should not silently fail the image transfer
• is related to: HDFS-15293 Relax the condition for accepting a fsimage when receiving a checkpoint
• is related to: HDFS-15036 Active NameNode should not silently fail the image transfer