[ https://issues.apache.org/jira/browse/ZOOKEEPER-2384?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Ted Yu updated ZOOKEEPER-2384: ------------------------------ Labels: atomic (was: ) > Support atomic increment / decrement of znode value > --------------------------------------------------- > > Key: ZOOKEEPER-2384 > URL: https://issues.apache.org/jira/browse/ZOOKEEPER-2384 > Project: ZooKeeper > Issue Type: Improvement > Reporter: Ted Yu > Labels: atomic > > Use case is to store reference count (integer type) in znode. > It is desirable to provide support for atomic increment / decrement of the > znode value. > Suggestion from Flavio: > you can read the znode, keep the version of the znode, update the value, > write back conditionally. The condition for the setData operation to succeed > is that the version is the same that it read > While the above is feasible, developer has to implement retry logic > him/herself. It is not easy to combine increment / decrement with other > operations using multi. -- This message was sent by Atlassian JIRA (v6.3.4#6332)