athanatos edited a comment on issue #1747: Set ConnectionExpired Listener to MetadataClientDriver in AR URL: https://github.com/apache/bookkeeper/pull/1747#issuecomment-428700988 Generally speaking, the transparent reconnect logic in ZooKeeperClient is dangerous in two ways to users that don't account for session expiration (and relatively little of the client or server code does): 1) Ephemeral nodes and watches can silently disappear. 2) Writes are generally non-idempotent, so retrying them can result in erroneous error conditions, as with node creation returning an EEXIST when it actually succeeded. It's easy to reproduce errors like 2 by introducing intermittent packet drops while creating ledgers.
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