What does a blue empty cell mean [ ] in Anaconda if the cell above is still [*]?

Question

I've been running a machine learning algorithm for two days now, I have a large dataset and a slow machine.
I noticed today that the cell below the "fit model" cell turned from green to blue, however, the cell above (the one with fit) is still running [*]

Diego Rueda · Accepted Answer

The cell with [*] means it is currently running, you can queue other cells for execution but until this cell finishes they will not run.
When it is empty [] it means you haven't run this cell.

Brady Gilg · Answer

Assuming you had queued up the second cell to run, I think I have seen this when the kernel crashes. Try opening another terminal and checking htop to see if it is still running.

What does a blue empty cell mean [ ] in Anaconda if the cell above is still [*]?

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