ayushtkn commented on code in PR #5237:
URL: https://github.com/apache/hadoop/pull/5237#discussion_r1051411641
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hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java:
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@@ -5893,7 +5893,7 @@ void reportBadBlocks(LocatedBlock[] blocks) throws
IOException {
String[] storageIDs = blocks[i].getStorageIDs();
for (int j = 0; j < nodes.length; j++) {
NameNode.stateChangeLog.info("*DIR* reportBadBlocks for block: {} on"
- + " datanode: {}", blk, nodes[j].getXferAddr());
+ + " datanode: {}" + " client: {}", blk, nodes[j].getXferAddr(),
Server.getRemoteIp());
Review Comment:
Instead of ``Server.getRemoteIp()``, do a ``getClientMachine()`` instead,
it handles calls via RBF.
Fetching of this IP Address should be outside lock, doing this inside lock
will hit performance.
You are logging this inside the loop, so better extract a variable outside.
reportBadBlocks is there in both ClientProtocol as well as in
DatanodeProtocol. Can check somewhat here for pointers
https://github.com/apache/hadoop/blob/ca3526da9283500643479e784a779fb7898b6627/hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/DFSInputStream.java#L1533-L1534
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