hfutatzhanghb commented on code in PR #5276:
URL: https://github.com/apache/hadoop/pull/5276#discussion_r1070749944
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hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/resolver/MountTableResolver.java:
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@@ -441,9 +448,12 @@ public PathLocation getDestinationForPath(final String
path)
if (this.locationCache == null) {
res = lookupLocation(processTrashPath(path));
} else {
- Callable<? extends PathLocation> meh = (Callable<PathLocation>) () ->
- lookupLocation(processTrashPath(path));
+ Callable<? extends PathLocation> meh = (Callable<PathLocation>) () -> {
+ LOC_CACHE_MISS.increment();
+ return lookupLocation(processTrashPath(path));
+ };
res = this.locationCache.get(processTrashPath(path), meh);
+ LOC_CACHE_ACCESS.increment();
Review Comment:
OK, i will add unit tests soon.
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