Github user greghogan commented on the pull request:
https://github.com/apache/flink/pull/1523#issuecomment-176858076
New commit which passes FLINK_SSH_OPTS to pdsh.
Also, some sample timings starting and stopping an AWS cluster of various
sizes, with ssh and pdsh comparable on a single node and pdsh noticeably faster
on large clusters.
64 x c4.large | ssh | pdsh
------------- | --- | ----
start | 13.969s | 4.210s
stop | 12.533s | 4.181s
start | 13.906s | 4.203s
stop | 13.169s | 4.283s
start | 14.122s | 4.262s
stop | 12.343s | 4.196s
16 x c4.large | ssh | pdsh
------------- | --- | ----
start | 3.961s | 1.270s
stop | 2.985s | 1.267s
start | 3.638s | 1.277s
stop | 3.014s | 1.164s
start | 3.410s | 1.470s
stop | 3.159s | 1.180s
1 x c4.large | ssh | pdsh
------------- | --- | ----
start | 0.439s | 0.543s
stop | 1.247s | 0.449s
start | 0.448s | 0.547s
stop | 1.439s | 1.300s
start | 0.439s | 0.542s
stop | 0.827s | 0.452s
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