INTEGRATION [PR#594 > development/8.1] ft: ZENKO-1175 tailable cursor to consume mongo oplog #600
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Use a tailable custor to keep ordering guarantees for the records we read. This also means we have to read from the beginning when we reconnect (at startup), and start processing when we encountered the unique ID previously stored in zookeeper. Also removed dispatcher mode with MongoLogReader (was only used for the short-lived Federation deployment of Zenko).
In case where there is no saved ID yet (initial deployment), do process the very first entry in the log instead of skipping it. In practice it should not have an impact because the very first entry in the log is normally not due to be processed for CRR, but it ensures correctness.
…bugfix/ZENKO-1175-oplogSkipFix
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This pull request has been created automatically.
It is linked to its parent pull request #594.
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If you need to amend/cancel the changeset on branch
w/8.1/bugfix/ZENKO-1175-oplogSkipFix, please follow thisprocedure:
$ git fetch $ git checkout w/8.1/bugfix/ZENKO-1175-oplogSkipFix $ # <amend or cancel the changeset by _adding_ new commits> $ git push origin w/8.1/bugfix/ZENKO-1175-oplogSkipFixPlease always comment pull request #594 instead of this one.