cshannon commented on code in PR #5102:
URL: https://github.com/apache/accumulo/pull/5102#discussion_r1869961538
##########
core/src/main/java/org/apache/accumulo/core/clientImpl/InstanceOperationsImpl.java:
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@@ -404,19 +386,34 @@ public List<ActiveCompaction> getActiveCompactions()
@Override
public List<ActiveCompaction> getActiveCompactions(Collection<ServerId>
compactionServers)
throws AccumuloException, AccumuloSecurityException {
+ return queryServers(compactionServers, this::getActiveCompactions,
+ INSTANCE_OPS_COMPACTIONS_FINDER_POOL);
+ }
+
+ private <T> List<T> queryServers(Collection<ServerId> servers,
ServerQuery<List<T>> serverQuery,
+ ThreadPoolNames pool) throws AccumuloException,
AccumuloSecurityException {
+
+ final ExecutorService executorService;
+ // If size 0 or 1 there's no need to create a thread pool
+ if (servers.isEmpty()) {
+ return List.of();
+ } else if (servers.size() == 1) {
+ executorService = MoreExecutors.newDirectExecutorService();
+ } else {
+ int numThreads = Math.max(4, Math.min((servers.size()) / 10, 256));
Review Comment:
I added a follow on https://github.com/apache/accumulo/issues/5135 to look
into setting a lower default or adding a property
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