reddycharan commented on a change in pull request #1225: Issue #570: getting
rid of unnecessary synchronization in InterleavedLedgerStorage
URL: https://github.com/apache/bookkeeper/pull/1225#discussion_r172354228
##########
File path:
bookkeeper-server/src/test/java/org/apache/bookkeeper/bookie/EntryLogTest.java
##########
@@ -391,4 +400,137 @@ public void testGetEntryLogsSet() throws Exception {
assertEquals(Sets.newHashSet(0L, 1L, 2L, 3L),
logger.getEntryLogsSet());
}
+
+ class LedgerStorageWriteTask implements Callable<Boolean> {
+ long ledgerId;
+ int entryId;
+ LedgerStorage ledgerStorage;
+
+ LedgerStorageWriteTask(long ledgerId, int entryId, LedgerStorage
ledgerStorage) {
+ this.ledgerId = ledgerId;
+ this.entryId = entryId;
+ this.ledgerStorage = ledgerStorage;
+ }
+
+ @Override
+ public Boolean call() {
+ try {
+ ledgerStorage.addEntry(generateEntry(ledgerId, entryId));
+ } catch (IOException e) {
+ LOG.error("Got Exception for AddEntry call. LedgerId: " +
ledgerId + " entryId: " + entryId, e);
+ return false;
+ }
+ return true;
+ }
+ }
+
+ class LedgerStorageReadTask implements Callable<Boolean> {
+ long ledgerId;
+ int entryId;
+ LedgerStorage ledgerStorage;
+
+ LedgerStorageReadTask(long ledgerId, int entryId, LedgerStorage
ledgerStorage) {
+ this.ledgerId = ledgerId;
+ this.entryId = entryId;
+ this.ledgerStorage = ledgerStorage;
+ }
+
+ @Override
+ public Boolean call() {
Review comment:
first thing
1) calling .get() on future is inevitable, since thats the only way you
would get the result of the future.
> Instead of returning false on errors, you could throw Exception, and have
that carry the context of the error (ledger id, entry id etc). This would
simplify the loops in the test itself.
2) even if I change the logic to throw exception instead of boolean in the
case of failure, we are not getting rid of loops. Because incase of
CancellationException we would get generic cancellation exception instead of
any of our exception with customized message. So atleast for this case we need
to do what we are doing.
Again as I said this is matter of preference how we deal with return status
of tasks/futures in junit test env. If you see it as a dealbreaker for you,
I'll go ahead and change it to throw exception, as I don't see value in
dragging this further.
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