adesh-rao commented on a change in pull request #1275:
URL: https://github.com/apache/hive/pull/1275#discussion_r458675680
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File path: ql/src/java/org/apache/hadoop/hive/ql/txn/compactor/Initiator.java
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@@ -149,17 +156,25 @@ public void run() {
String runAs = resolveUserToRunAs(tblNameOwners, t, p);
/* checkForCompaction includes many file metadata checks and may
be expensive.
* Therefore, using a thread pool here and running
checkForCompactions in parallel */
-
compactionList.add(CompletableFuture.runAsync(ThrowingRunnable.unchecked(() ->
- scheduleCompactionIfRequired(ci, t, p, runAs)),
compactionExecutor));
+ completionService.submit(() -> {
+ ThrowingRunnable.unchecked(() ->
scheduleCompactionIfRequired(ci, t, p, runAs));
+ return null;
+ });
+ count++;
} catch (Throwable t) {
LOG.error("Caught exception while trying to determine if we
should compact {}. " +
"Marking failed to avoid repeated failures, {}", ci, t);
ci.errorMessage = t.getMessage();
txnHandler.markFailed(ci);
}
}
- CompletableFuture.allOf(compactionList.toArray(new
CompletableFuture[0]))
- .join();
+ for(int i=0; i<count; i++) {
Review comment:
Earlier I missed the fact that we don't care in how and when are task
getting completed and using join is better in terms of readability and
usability too. So I have reverted this change.
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