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  1. ZooKeeper
  2. ZOOKEEPER-4463

Improve the data protocol

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      There are many operations that require multiple requests being sent to server.Not only it decreases perfomance , but also it may cause race condition, when data is being changed between several operations. 
      For example : when user wants to store the data it should first either check if item exists and based on the result set and create the record ( another option is to try either set or create first and if it fails try to second command ) 
      Even more problematic op is delete. In case the node has many children, the application should remotely collect those nodes and then delete them. Same for getting children data. 

      Therefore , in order to improve the perfomance following operations may be very valuable
      1) createOrSet - in some case the goal is to store the value , and its prior state is not important

      2) recursiveDelete - this operation actually exists in CLI but does not exists for remote commands

      3) getChildrenData - return all nodes children together with their data. 

       

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              Unassigned Unassigned
              yulian.oifa Yulian Oifa
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