YARN-10499. TestRouterWebServiceREST fails (#2490). Contributed by Akira Ajisaka
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@ -181,6 +181,11 @@ public class CSMappingPlacementRule extends PlacementRule {
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return;
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}
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Set<String> groupsSet = groups.getGroupsSet(user);
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if (groupsSet.isEmpty()) {
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LOG.warn("There are no groups for user {}", user);
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vctx.putExtraDataset("groups", groupsSet);
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return;
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}
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String secondaryGroup = null;
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Iterator<String> it = groupsSet.iterator();
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String primaryGroup = it.next();
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