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Fix corner case in DESIGN.txt

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cozis
2025-11-13 12:18:34 +01:00
parent 4ec47e66b4
commit facd220c59
1 changed files with 4 additions and 1 deletions
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DESIGN.txt
+4 -1
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@@ -145,6 +145,7 @@ Chunk Management:
Chunk server variables: Chunk server variables:
cs_add_list: List of chunks added since the last update cs_add_list: List of chunks added since the last update
cs_rem_list: List of chunks marked for removal after a timeout cs_rem_list: List of chunks marked for removal after a timeout
cs_lst_list: List of chunks that were lost due to errors or forceful removals of chunk files
Metadata change for write: Metadata change for write:
When clients commit a write by adding new hashes to the metadata, When clients commit a write by adding new hashes to the metadata,
@@ -172,7 +173,9 @@ Chunk Management:
(2) Adds elements in cs_add_list that are not in ms_add_list to cs_rem_list (2) Adds elements in cs_add_list that are not in ms_add_list to cs_rem_list
(3) Removes elements that are in ms_add_list and in cs_rem_list from cs_rem_list (3) Removes elements that are in ms_add_list and in cs_rem_list from cs_rem_list
(4) Elements in ms_add_list that are not held by the chunk server are added to (4) Elements in ms_add_list that are not held by the chunk server are added to
a temporary list tmp_list are sent to the metadata server a temporary list tmp_list
(5) Elements in cs_lst_list are added to tmp_list
(6) tmp_list is sent to MS
MS (1) Receives tmp_list and sends download locations to CS for those chunks MS (1) Receives tmp_list and sends download locations to CS for those chunks
(2) Moves elements from ms_add_list that are not in tmp_list into ms_old_list (2) Moves elements from ms_add_list that are not in tmp_list into ms_old_list
(3) Sets ms_add_list equal to tmp_list (3) Sets ms_add_list equal to tmp_list