ctubbsii commented on a change in pull request #2279:
URL: https://github.com/apache/accumulo/pull/2279#discussion_r712661601
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File path: server/monitor/src/main/java/org/apache/accumulo/monitor/Monitor.java
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@@ -578,15 +577,6 @@ private void fetchScans() throws Exception {
ThriftUtil.returnClient(tserver);
}
}
- // Age off old scan information
- Iterator<Entry<HostAndPort,ScanStats>> entryIter =
allScans.entrySet().iterator();
- long now = System.currentTimeMillis();
- while (entryIter.hasNext()) {
- Entry<HostAndPort,ScanStats> entry = entryIter.next();
- if (now - entry.getValue().fetched > 5 * 60 * 1000) {
- entryIter.remove();
- }
- }
Review comment:
I don't think this change will result in desired behavior. There is no
other code that will ever remove anything from `allScans` other than this code.
So, that object will continue to grow indefinitely, keeping every scan ever
fetched, until the monitor falls over due to memory problems.
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