[HDFS-12208] NN should consider DataNode#xmitInProgress when placing new block

• Type: Improvement
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 3.0.0-alpha4
• Component/s: block placement, erasure-coding
• Target Version/s: 3.5.0
• Assignee: Lei (Eddy) Xu
• Reporter: Lei (Eddy) Xu
• Created: 27/Jul/17 19:06
• Updated: 04/Jan/24 07:20

Description

As discussed in HDFS-12044, NN only considers xceiver counts on DN when placing new blocks. NN should also consider background reconstruction works, presented by xmits on DN.

Issue Links

• relates to: HDFS-12044 Mismatch between BlockManager#maxReplicationStreams and ErasureCodingWorker.stripedReconstructionPool pool size causes slow and bursty recovery