public void testCustomCircuitBreakerRegistration() throws Exception {
Iterable<CircuitBreakerService> serviceIter =
internalCluster().getInstances(CircuitBreakerService.class);
final String breakerName = "customBreaker";
BreakerSettings breakerSettings = new BreakerSettings(breakerName, 8, 1.03);
CircuitBreaker breaker = null;
for (CircuitBreakerService s : serviceIter) {
s.registerBreaker(breakerSettings);
breaker = s.getBreaker(breakerSettings.getName());
}
if (breaker != null) {
try {
breaker.addEstimateBytesAndMaybeBreak(16, "test");
} catch (CircuitBreakingException e) {
// ignore, we forced a circuit break
}
}
NodesStatsResponse stats =
client().admin().cluster().prepareNodesStats().clear().setBreaker(true).get();
int breaks = 0;
for (NodeStats stat : stats.getNodes()) {
CircuitBreakerStats breakerStats = stat.getBreaker().getStats(breakerName);
breaks += breakerStats.getTrippedCount();
}
assertThat(breaks, greaterThanOrEqualTo(1));
}
public void testRamAccountingTermsEnum() throws Exception {
if (noopBreakerUsed()) {
logger.info("--> noop breakers used, skipping test");
return;
}
final Client client = client();
// Create an index where the mappings have a field data filter
assertAcked(
prepareCreate("ramtest")
.setSource(
"{\"mappings\": {\"type\": {\"properties\": {\"test\": "
+ "{\"type\": \"text\",\"fielddata\": true,\"fielddata_frequency_filter\": {\"max\": 10000}}}}}}"));
ensureGreen("ramtest");
// index some different terms so we have some field data for loading
int docCount = scaledRandomIntBetween(300, 1000);
List<IndexRequestBuilder> reqs = new ArrayList<>();
for (long id = 0; id < docCount; id++) {
reqs.add(
client
.prepareIndex("ramtest", "type", Long.toString(id))
.setSource("test", "value" + id));
}
indexRandom(true, false, true, reqs);
// execute a search that loads field data (sorting on the "test" field)
client.prepareSearch("ramtest").setQuery(matchAllQuery()).addSort("test", SortOrder.DESC).get();
// clear field data cache (thus setting the loaded field data back to 0)
clearFieldData();
// Update circuit breaker settings
Settings settings =
Settings.builder()
.put(
HierarchyCircuitBreakerService.FIELDDATA_CIRCUIT_BREAKER_LIMIT_SETTING.getKey(),
"100b")
.put(
HierarchyCircuitBreakerService.FIELDDATA_CIRCUIT_BREAKER_OVERHEAD_SETTING.getKey(),
1.05)
.build();
assertAcked(client.admin().cluster().prepareUpdateSettings().setTransientSettings(settings));
// execute a search that loads field data (sorting on the "test" field)
// again, this time it should trip the breaker
assertFailures(
client.prepareSearch("ramtest").setQuery(matchAllQuery()).addSort("test", SortOrder.DESC),
RestStatus.INTERNAL_SERVER_ERROR,
containsString("Data too large, data for [test] would be larger than limit of [100/100b]"));
NodesStatsResponse stats = client.admin().cluster().prepareNodesStats().setBreaker(true).get();
int breaks = 0;
for (NodeStats stat : stats.getNodes()) {
CircuitBreakerStats breakerStats = stat.getBreaker().getStats(CircuitBreaker.FIELDDATA);
breaks += breakerStats.getTrippedCount();
}
assertThat(breaks, greaterThanOrEqualTo(1));
}