Documented resuming changefeed from Failure state

pingcap · Nov 30, 2023 · f6c3e34 · f6c3e34
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diff --git a/media/ticdc/ticdc-changefeed-state-transfer.png b/media/ticdc/ticdc-changefeed-state-transfer.png
diff --git a/ticdc/ticdc-changefeed-overview.md b/ticdc/ticdc-changefeed-overview.md
@@ -35,6 +35,7 @@ The numbers in the preceding state transfer diagram are described as follows.
 - ⑥ The changefeed encounters an unrecoverable error and directly enters the failed state. At this time, the changefeed continues to block upstream GC for a duration specified by `gc-ttl`.
 - ⑦ The replication progress of the changefeed reaches the value set by `target-ts`, and the replication is completed.
 - ⑧ The changefeed has been suspended for a duration longer than the value specified by `gc-ttl`, thus encountering GC advancement errors, and cannot be resumed.
+- ⑨ If the cause of the failure has been resolved, and the changefeed was suspended for a duration shorter than the value specified by `gc-ttl`, run the `changefeed resume` command to resume the replication task.
 
 ## Operate changefeeds