I worked on something related to this back on S4 0.4. At that moment one of the alternatives was to use Redis as a checkpoint storage mechanism. https://github.com/s4/s4/blob/master/s4-core/src/main/java/org/apache/s4/ft/RedisStateStorage.java
I worked on creating an append-only file similar to the DefaultFileSystemStateStorage but ysing one file instead of many. But this was more a proof of concept implementation. While doing this we also thought on using a Distributed File System such as NFS or similar and just using the DefaultFileSystemStateStorage on this path. This would improve the availability of the checkpoints. On Mon, Aug 19, 2013 at 4:33 AM, Kurtt.Lin (JIRA) <[email protected]> wrote: > > [ > https://issues.apache.org/jira/browse/S4-137?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13743490#comment-13743490] > > Kurtt.Lin commented on S4-137: > ------------------------------ > > guys, please comment. can assign this to me. :) > > > Add HDFS StateStorage for more reliable checkpoint saving > > --------------------------------------------------------- > > > > Key: S4-137 > > URL: https://issues.apache.org/jira/browse/S4-137 > > Project: Apache S4 > > Issue Type: New Feature > > Affects Versions: 0.6 > > Reporter: Kurtt.Lin > > Priority: Minor > > Labels: checkpoint > > Fix For: 0.7 > > > > Original Estimate: 120h > > Remaining Estimate: 120h > > > > Currently DefaultFileSystemStateStorage is the only implementation for > StateStorage. Should have a storage like HDFS to improve the reliability of > the checkpoints' states. Some apps would benefit from this. > > -- > This message is automatically generated by JIRA. > If you think it was sent incorrectly, please contact your JIRA > administrators > For more information on JIRA, see: http://www.atlassian.com/software/jira >
