Apache
/
hadoop
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

HDFS-10620. StringBuilder created and appended even if logging is disabled. Contributed by Staffan Friberg. 

(cherry picked from commit f7dabe3add)
(cherry picked from commit 2685e16f38)
This commit is contained in:
Akira Ajisaka 2016-07-19 15:13:01 -07:00
parent d8181a8cb8
commit 91f47ab5f9
1 changed files with 6 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockManager.java
View File

@ -1210,16 +1210,19 @@ public class BlockManager implements BlockStatsMXBean {
if (!isPopulatingReplQueues()) {
return;
}
StringBuilder datanodes = new StringBuilder();
StringBuilder datanodes = blockLog.isDebugEnabled()
? new StringBuilder() : null;
for (DatanodeStorageInfo storage : blocksMap.getStorages(b)) {
if (storage.getState() != State.NORMAL) {
continue;
}
final DatanodeDescriptor node = storage.getDatanodeDescriptor();
invalidateBlocks.add(b, node, false);
datanodes.append(node).append(" ");
if (datanodes != null) {
datanodes.append(node).append(" ");
}
}
if (datanodes.length() != 0) {
if (datanodes != null & datanodes.length() != 0) {
blockLog.debug("BLOCK* addToInvalidates: {} {}", b, datanodes);
}
}