leosanqing opened a new pull request, #3568:
URL: https://github.com/apache/flink-cdc/pull/3568
# ISSUE
Hi, when I was using Flink CDC Postgre, I chose 'debezium.snapshot.mode' =
'never' to skip the snapshot phase, but the code still entered the snapshot
branch, and this log was printed, 'Database snapshot phase can 't perform
checkpoint, acquired Checkpoint lock.'
(Since our business creates the task first and then writes the data), the
task cannot perform ckp, and the status is always stuck in in progress. After
the timeout, the task restarts.
Normally, if you only choose incremental data synchronization, you should
not enter this branch.
The failure of ckp does not mean that the first one fails. After multiple
ckp are successfully performed, it will then get stuck, causing a timeout and
restarting the task. This is a problem that must occur. After it appeared in
production, it also recurred many times in local testing.
Then we test, if there is data flowing in, the task status will be normal.
sql and conf like this
# Why do this？
I think this miss one case，when I set "snapshot = nerver", I don't want to
enter DB snapshot phase, and it can resolve my problem.
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