<p>There are three Merger statistics that can be used to better understand how the data flow through the Merger system is proceeding.</p>
<p>Two are from the Link task and one is from the Merger.They are all "No data buffers avaliable" with #1, #2, #3 at the end.</p>
<p>#1: This is incremented when the Link task has a data item to put in the queue for the Merge process but there is no room.</p>
<p>#2: This is incremented when the Link task has found no room in the queue for the Merge process ( #1 ) , waited , tried again and failed. </p>
<p>#3: This the other end of the queue. When the Merge task requests a data item from a Link task queue and there is nothing available.</p>
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