ferhui commented on code in PR #6647:
URL: https://github.com/apache/hadoop/pull/6647#discussion_r1533604421
##########
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java:
##########
@@ -5346,11 +5346,12 @@ NamenodeCommand startCheckpoint(NamenodeRegistration
backupNode,
public void processIncrementalBlockReport(final DatanodeID nodeID,
final StorageReceivedDeletedBlocks srdb)
throws IOException {
- writeLock();
+ // Needs the FSWriteLock since it may update quota and access storage
policyId and full path.
Review Comment:
Better to make the comment clear.
FS lock in the comment, but global lock in codes.
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