doc: added deletion overview with very high level chart. #288

[panta-123]

Added the deletion overveiw in different chapter.

Few things I am not clear.

1. When setting TOMBSTONE by cleaner and undertaker , what is the value it sets. I look through the code and not clear to me.

2. The chart are very crude and may need some imporvement suggestion needed here.

[panta-123]

All the comments has been resolved !!

[bari12]

Just one more change :-)

[voetberg]

Thanks for the changes! 👍

[voetberg]

@bari12 Can you verify your requested changes are completed?

[bari12]

It's good. Thanks @panta-123 and @voetberg
You need to add the file to the sidebars.json though, otherwise it won't show up in the doc

[rdimaio]

In case future changes need to be done, it would be great to have the source code for the flowcharts as part of the documentation repo. Maybe we could use Mermaid.js to handle this?

[rdimaio]

"get list of all replica with tombstone" -> "get list of all replicas with tombstone"

[rdimaio]

There are two identical "get list of all replicas with tombstone" blocks; the chart could be simplified so that there is only one block, to which you can either get via "Is greedy? YES" or "needed_free_space >= 0"

[panta-123]

There is another step for needed_free_space so that will complicate things if pointrd to single blocks.

[panta-123]

@rdimaio , The mermaid.js lets create another issue and handle all the chart there.