BTW, for the case `getDataResponse.stat.getEphemeralOwner != zooKeeperClient.sessionId`, we know this case may happen and the code will automatically recover from this. In this case it is probably better to log at warning level instead of error level. Here is a good explanation for how to choose log level. https://stackoverflow.com/questions/2031163/when-to-use-the-different-log-levels.
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