[HDFS-15978] Solve DatanodeManager#getBlockRecoveryCommand() printing IOException

• Type: Improvement
• Status: Resolved
• Priority: Trivial
• Resolution: Fixed
• Fix Version/s: 3.4.0
• Component/s: namanode
• Labels: pull-request-available
• Hadoop Flags: Reviewed
• Assignee: JiangHua Zhu
• Reporter: JiangHua Zhu
• Created: 15/Apr/21 07:20
• Updated: 26/Apr/21 07:05
• Resolved: 25/Apr/21 06:33

Description

When calling DatanodeManager#getBlockRecoveryCommand(), if an IOException occurs, there is no space when printing the BlockInfo information, which is not conducive to viewing the log.
BlockUnderConstructionFeature uc = b.getUnderConstructionFeature();
if(uc == null)

{ throw new IOException("Recovery block "+ b + "where it is not under construction."); }

Issue Links

• links to: GitHub Pull Request #2913