Sanil15 commented on a change in pull request #1335: Optimizing startpoint
manager to not make successive bootstrapMessage calls to coordinator-store
URL: https://github.com/apache/samza/pull/1335#discussion_r401848987
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File path:
samza-core/src/main/java/org/apache/samza/startpoint/StartpointManager.java
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@@ -158,8 +158,25 @@ public void writeStartpoint(SystemStreamPartition ssp,
TaskName taskName, Startp
* @return {@link Optional} of {@link Startpoint} for the {@link
SystemStreamPartition}.
* It is empty if it does not exist or if it is too stale.
*/
+ @VisibleForTesting
public Optional<Startpoint> readStartpoint(SystemStreamPartition ssp) {
- return readStartpoint(ssp, null);
+ Map<String, byte[]> startpointBytes = readWriteStore.all();
+ // there is no task-name to use as key for the startpoint in this case
(only the ssp), so we use a null task-name
+ return readStartpoint(startpointBytes, ssp, null);
+ }
+
+ /**
+ * Returns the last {@link Startpoint} that defines the start position for a
{@link SystemStreamPartition} and {@link TaskName}.
+ * @param ssp The {@link SystemStreamPartition} to fetch the {@link
Startpoint} for.
+ * @param taskName the {@link TaskName} to fetch the {@link Startpoint} for.
+ * @return {@link Optional} of {@link Startpoint} for the {@link
SystemStreamPartition}.
+ * It is empty if it does not exist or if it is too stale.
+ */
+ @VisibleForTesting
+ public Optional<Startpoint> readStartpoint(SystemStreamPartition ssp,
TaskName taskName) {
+ Map<String, byte[]> startpointBytes = readWriteStore.all();
+ // there is no task-name to use as key for the startpoint in this case
(only the ssp), so we use a null task-name
Review comment:
Please correct the comment, task-name can non-null
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