Eric Newton created ACCUMULO-3999:
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Summary: monitor status collection should be done in parallel
Key: ACCUMULO-3999
URL: https://issues.apache.org/jira/browse/ACCUMULO-3999
Project: Accumulo
Issue Type: Improvement
Components: master
Environment: very large cluster
Reporter: Eric Newton
Assignee: Eric Newton
Fix For: 1.8.0
The master collects statistics every few seconds from all the tservers so that
it has up-to-date statistics to hand to the balancer. It does this one server
at a time. On a very large cluster, the status collection can take a long
time, causing the monitor to show "blocky" statistics in the graphs, and long
"last contact" times in the tablet server lists.
A small thread pool could be used to speed up this simple work.
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