Batching is not working correctly in HttpSink #108

I used the HttpSink plugin version 1.2.5 in Cloud Data Fusion (version 6.7.2) in Google Cloud. While running my pipeline, data is getting sent out in batches but data that does not fit into a batch is never sent out.

For example:
If I have 100 records and if my batch size is 23, 92 records are sent out while the pipeline is running. The remaining 8 records are not sent out.
Having gone through the code I think the destroy() is not getting invoked.