[jira] [Created] (FLINK-5987) Upgrade zookeeper dependency to 3.4.8

[Shang Yuanchun (Jira)]

Ted Yu created FLINK-5987:
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             Summary: Upgrade zookeeper dependency to 3.4.8
                 Key: FLINK-5987
                 URL: https://issues.apache.org/jira/browse/FLINK-5987
             Project: Flink
          Issue Type: Improvement
            Reporter: Ted Yu


zookeeper 3.4.8 has been released.
Among the fixes the following are desirable:

ZOOKEEPER-706 large numbers of watches can cause session re-establishment to fail
ZOOKEEPER-1797 PurgeTxnLog may delete data logs during roll

This issue upgrades zookeeper dependency to 3.4.8



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