keith-turner commented on code in PR #5929:
URL: https://github.com/apache/accumulo/pull/5929#discussion_r2376839776
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test/src/main/java/org/apache/accumulo/test/functional/OnDemandTabletUnloadingIT.java:
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@@ -169,6 +171,54 @@ public void testTabletUnloader() throws Exception {
}
}
+ /**
+ * Test the behavior of transitioning tablets from having a tablet
availability of HOSTED to
+ * ONDEMAND. This transition should cause all tablets to unload because
tablets are hosted but do
+ * not have a hosting requested column set.
+ */
+ @Test
+ public void testTransitionFromHostedToOndemand() throws Exception {
+ try (AccumuloClient c =
Accumulo.newClient().from(getClientProps()).build()) {
+
+ String tableName = super.getUniqueNames(1)[0];
+
+ TreeSet<Text> splits = new TreeSet<>();
+ splits.add(new Text("f"));
+ splits.add(new Text("m"));
+ splits.add(new Text("t"));
+
+ NewTableConfiguration ntc = new NewTableConfiguration();
+ ntc.withSplits(splits);
+ // set this really high because the manager should unassign tablets
because of a lack of a
+ // hosting requested column
+ ntc.setProperties(
+ Map.of(LastAccessTimeOnDemandTabletUnloader.INACTIVITY_THRESHOLD,
"1000000"));
+ ntc.withInitialTabletAvailability(TabletAvailability.HOSTED);
+ c.tableOperations().create(tableName, ntc);
+ String tableId = c.tableOperations().tableIdMap().get(tableName);
+
+ // wait for all tablets in table to be hosted
+ Wait.waitFor(() -> ManagerAssignmentIT.countTabletsWithLocation(c,
TableId.of(tableId)) == 4);
+
+ // transition all tablets to ondemand. Since no tablets have a hosting
requested column set
+ // the manager should unassign all tablets.
+ c.tableOperations().setTabletAvailability(tableName, new Range(),
+ TabletAvailability.ONDEMAND);
+
+ Wait.waitFor(() -> ManagerAssignmentIT.countTabletsWithLocation(c,
TableId.of(tableId)) == 0);
+
+ // scan tablet.
+ try (var scanner = c.createScanner(tableName)) {
+ scanner.setRange(new Range("h"));
+ assertFalse(scanner.iterator().hasNext());
+ }
+
+ // ensure only one tablet is hosted now since we transitioned all
tablets to ONDEMAND
+ Wait.waitFor(() -> ManagerAssignmentIT.countTabletsWithLocation(c,
TableId.of(tableId)) == 1);
+ Wait.waitFor(() -> ONDEMAND_ONLINE_COUNT == 1);
Review Comment:
the waitfor methods will use a defualt timeout of 30s when one is not
specified.
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