Add functions that can be used as basic distributed synchronisation primitives
in bash scripts
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Key: WHIRR-474
URL: https://issues.apache.org/jira/browse/WHIRR-474
Project: Whirr
Issue Type: Improvement
Components: core
Reporter: Andrei Savu
Fix For: 0.7.1
I'm think about things like: wait_for_port, wait_for_http_response,
wait_for_tcp_response etc. The Hadoop Datanode can then use wait_for_port to
wait for the Namenode.
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