Snapshot Available

[DarioCrivelli]

The "Snapshot buffer size for DISTINCT item MW#1#1#1 set to 0" log line clearly states that the snapshot length is zero, hence no snapshot is kept.

According to your implementation of getDistinctSnapshotLength, that shouldn't have happened.
Could you try to trace your getDistinctSnapshotLength implementation and see if it is indeed invoked?

[vaduganathan]

Yes, you are right, the getDistinctSnapshotLength is not invoked at all...

How should I invoke this? I thought lightstreamer will invoke this automatically.

I am using lightstreamer Version 3.5 Update 1428.4

[DarioCrivelli]

In my previous post I didn't notice that,
but you coded getDistinctSnapshotLength in the Data Adapter (beside isSnapshotAvailable);
you should rather code it in the Metadata Adapter;
then, Lightstreamer will invoke it automatically.

Are you using a custom Metadata Adapter or the ready-made LiteralBasedProvider?
In the latter case, you don't need to move to a custom Metadata Adapter, as the setting of <param name="distinct_snapshot_length">500</param> should do the trick;
if it hasn't worked, maybe the syntax is not correct; please ensure that the line is inside the <metadata_provider> element.

[vaduganathan]

Thanks a lot !!!

When I moved the getDistinctSnapshotLength to Meta Data adapter. it worked.