Github user vrozov commented on a diff in the pull request:
https://github.com/apache/incubator-apex-core/pull/286#discussion_r61828415
--- Diff:
engine/src/main/java/com/datatorrent/stram/engine/AbstractReservoir.java ---
@@ -47,7 +49,7 @@
{
private static final Logger logger =
LoggerFactory.getLogger(AbstractReservoir.class);
static final String reservoirClassNameProperty =
"com.datatorrent.stram.engine.Reservoir";
- private static final int USE_SPSC_CAPACITY = 8 * 1024;
+ private static final int USE_SPSC_CAPACITY = 64 * 1024;
--- End diff --
As SpscArrayBlockingQueueReservoir provides larger throughtput compared to
ArrayBlockingQueueReservoir, it exceeds throughput of SpscReservoir for larger
queue capacity.
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