public void testUpgrade() throws Exception {
if (backwardsCluster().numNewDataNodes() == 0) {
backwardsCluster().startNewNode();
}
int numIndexes = randomIntBetween(2, 4);
String[] indexNames = new String[numIndexes];
for (int i = 0; i < numIndexes; ++i) {
String indexName = "test" + i;
indexNames[i] = indexName;
Settings settings =
ImmutableSettings.builder()
.put("index.routing.allocation.exclude._name", backwardsCluster().newNodePattern())
// don't allow any merges so that we can check segments are upgraded
// by the upgrader, and not just regular merging
.put("index.merge.policy.segments_per_tier", 1000000f)
.put(indexSettings())
.build();
assertAcked(prepareCreate(indexName).setSettings(settings));
ensureGreen(indexName);
assertAllShardsOnNodes(indexName, backwardsCluster().backwardsNodePattern());
int numDocs = scaledRandomIntBetween(100, 1000);
List<IndexRequestBuilder> builder = new ArrayList<>();
for (int j = 0; j < numDocs; ++j) {
String id = Integer.toString(j);
builder.add(client().prepareIndex(indexName, "type1", id).setSource("text", "sometext"));
}
indexRandom(true, builder);
ensureGreen(indexName);
flushAndRefresh();
}
backwardsCluster().allowOnAllNodes(indexNames);
backwardsCluster().upgradeAllNodes();
ensureGreen();
checkNotUpgraded("/_upgrade");
final String indexToUpgrade = "test" + randomInt(numIndexes - 1);
runUpgrade("/" + indexToUpgrade + "/_upgrade");
awaitBusy(
new Predicate<Object>() {
@Override
public boolean apply(Object o) {
try {
return isUpgraded("/" + indexToUpgrade + "/_upgrade");
} catch (Exception e) {
throw ExceptionsHelper.convertToRuntime(e);
}
}
});
runUpgrade("/_upgrade", "wait_for_completion", "true");
checkUpgraded("/_upgrade");
}
