Github user xiaokang commented on the pull request:
https://github.com/apache/incubator-storm/pull/168#issuecomment-49539373
@revans2 and @Gvain , we also have used forceSync=no to reduce disk io of
zk servers. IO util jumped from nearly 100% to less than 10% for a 500 node
cluster. However it's a risk to lost data according to zk's document.
We'll try this gzip compression code to reduce the network flow of zk
servers.
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