EaseLog does not pull an environment's audit history across in one long operation. It breaks the work into pieces. Understanding those pieces makes everything else on the Queue Overview page easy to read.
What a chunk is
A chunk is one unit of work. Each chunk covers one audit window, which is a stretch of time with a start and an end.
You can see this in the Audit Window column of the chunk table. One row might cover 1:00 AM to 1:20 AM, and the next 1:20 AM to 1:40 AM.

Figure 1. The Queue Overview page showing Queue Progress, the separate Audit and Details progress bars, the state filter chips and the chunk table.
Each chunk moves through the queue states on its own, at its own pace.
Why it matters
A failed chunk does not stop the sync. If one chunk cannot be completed, EaseLog sets it aside and the other chunks carry on. You lose that one window until it is retried, not the whole job.
This is the single most useful thing to know about the queue. A Failed count above zero is worth acting on, but it does not mean your sync has stopped.
Two passes per chunk
Each chunk is fetched in two stages, which is why Queue Overview shows two progress bars rather than one:
- Audit. The audit records for that window are fetched from Dynamics 365.
- Details. The detail of each of those records is fetched and added.
A chunk therefore passes through two separate fetching states on its way to Completed. See Queue States: What Each One Means.
Why the windows are different lengths
Audit windows are not a fixed size. A busy period produces more records, so EaseLog uses shorter windows to keep each chunk manageable. A quiet overnight period can be covered by one longer window.
A short window with a high record count and a long window with a low one are both normal.
Reading the record counts
The Records column shows how many audit records that chunk brought across. Adding them up gives the Total Audit Logs figure at the top of the page.
If a chunk shows zero records and completed successfully, there was simply no audit activity in that window.