[HDFS-15448] Remove duplicate BlockPoolManager starting when run DataNode

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.1.1
• Fix Version/s: 3.4.0
• Component/s: datanode
• Target Version/s: 3.4.0
• Hadoop Flags: Reviewed
• Assignee: JiangHua Zhu
• Reporter: JiangHua Zhu
• Created: 30/Jun/20 13:10
• Updated: 13/Feb/24 07:33
• Resolved: 24/Aug/20 13:32

Description

When starting a DataNode, call BlockPoolManager#startAll() twice.
The first call:
BlockPoolManager#doRefreshNamenodes()
private void doRefreshNamenodes(
Map<String, Map<String, InetSocketAddress>> addrMap,
Map<String, Map<String, InetSocketAddress>> lifelineAddrMap)
throws IOException

{ ... startAll(); ... }

The second call:
DataNode#runDatanodeDaemon()
public void runDatanodeDaemon() throws IOException

{ blockPoolManager.startAll(); ... }

Issue Links

• duplicates: HDFS-12696 BlockPoolManager#startAll is called twice during DataNode startup