[HDFS-16423] balancer should not get blocks on stale storages

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.4.0, 3.3.5
• Component/s: balancer & mover
• Labels: pull-request-available
• Assignee: qinyuren
• Reporter: qinyuren
• Created: 13/Jan/22 09:07
• Updated: 27/Jan/22 04:14
• Resolved: 26/Jan/22 03:54

Description

We have met a problems as described in HDFS-16420

We found that balancer copied a block multi times without deleting the source block if this block was placed in a stale storage. And resulting a block with many copies, but these redundant copies are not deleted until the storage become not stale.

 

Issue Links

• links to: GitHub Pull Request #3883
• links to: GitHub Pull Request #3924