[HDFS-15416] Improve DataStorage#addStorageLocations() for empty locations

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.4.0
• Component/s: datanode
• Hadoop Flags: Reviewed
• Assignee: JiangHua Zhu
• Reporter: JiangHua Zhu
• Created: 17/Jun/20 10:48
• Updated: 01/Jul/20 06:06
• Resolved: 01/Jul/20 05:56

Description

SuccessLocations content is an array, when the number is 0, do not need to be executed again loadBlockPoolSliceStorage ().

try
{ 
  final List<StorageLocation> successLocations = loadDataStorage(datanode, nsInfo,    dataDirs, startOpt, executor); 
  return loadBlockPoolSliceStorage(datanode, nsInfo, successLocations, startOpt, executor); 
} finally{
  executor.shutdown();
}

Issue Links

• links to: PR 2093