hanishakoneru commented on issue #369: HDDS-2755. Compare transactionID and updateID of Volume operations to avoid replaying transactions URL: https://github.com/apache/hadoop-ozone/pull/369#issuecomment-566742756 > > > Replay Tx 40 - Vol1 already exists => Tx will throw VOLUME_ALREADY_EXISTS when trying to createVolume > > > > > > This also will be considered as replay right? > > No. This is not replay. This is another request after the restart. In non-HA after every restart ratisTransactionIndex starts from zero, we have not persisted the value. Sorry I didnt understand. In non-HA case, we have to handle differently by setting the transactionIndex to LastAppliedIndex. In the example I gave, this is a replay of transaction 40. I have not considered the requests which are received after the restart.
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