Reidddddd commented on a change in pull request #549: HBASE-22912 [Backport]
HBASE-22867 to branch-1 to avoid ForkJoinPool to spawn thousands of threads
URL: https://github.com/apache/hbase/pull/549#discussion_r319346359
##########
File path:
hbase-server/src/main/java/org/apache/hadoop/hbase/master/cleaner/CleanerChore.java
##########
@@ -322,140 +330,154 @@ public boolean getEnabled() {
T act() throws IOException;
}
- /**
- * Attemps to clean up a directory, its subdirectories, and files. Return
value is true if
- * everything was deleted. false on partial / total failures.
- */
- private final class CleanerTask extends RecursiveTask<Boolean> {
- private static final long serialVersionUID = -1584635903138015418L;
- private final Path dir;
- private final boolean root;
+ private interface Callback {
+ void run(boolean val);
+ }
- CleanerTask(final FileStatus dir, final boolean root) {
- this(dir.getPath(), root);
+ private final class AsyncResult {
+
+ private Callback callback;
+ private boolean result;
+ private boolean resultSet = false;
+
+ AsyncResult(Callback callback) {
Review comment:
The same question, can AsyncResult be generic? Looks like `AsyncResult` and
`Callback` should be designed together, but now they are separated.
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