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_r172283513
##########
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:
I don't see why using .get would be messy. Just FYI about Junit, "The JUnit
framework captures only assertion errors in the main thread running the test.
It is not aware of exceptions from within new spawn threads. In order to do it
right, you should communicate the thread's termination state to the main
thread." So to get the status/result of task executed in non-main thread we
should call for .get of future. Agreed, instead of returning boolean we may
throw exception with proper message, but for diagnosing / logging purpose I
feel it is better to fail with Assert statements and enough logging in the
tasks. I see it is just a matter of preference and there is no much difference
in choosing one over the other.
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