@Override
protected Settings nodeSettings(int nodeOrdinal) {
return Settings.builder()
.put(HierarchyCircuitBreakerService.FIELDDATA_CIRCUIT_BREAKER_TYPE_SETTING.getKey(), "noop")
// This is set low, because if the "noop" is not a noop, it will break
.put(HierarchyCircuitBreakerService.FIELDDATA_CIRCUIT_BREAKER_LIMIT_SETTING.getKey(), "10b")
.put(HierarchyCircuitBreakerService.REQUEST_CIRCUIT_BREAKER_TYPE_SETTING.getKey(), "noop")
// This is set low, because if the "noop" is not a noop, it will break
.put(HierarchyCircuitBreakerService.REQUEST_CIRCUIT_BREAKER_LIMIT_SETTING.getKey(), "10b")
.build();
}
/** Reset all breaker settings back to their defaults */
private void reset() {
logger.info("--> resetting breaker settings");
Settings resetSettings =
Settings.builder()
.put(
HierarchyCircuitBreakerService.FIELDDATA_CIRCUIT_BREAKER_LIMIT_SETTING.getKey(),
HierarchyCircuitBreakerService.FIELDDATA_CIRCUIT_BREAKER_LIMIT_SETTING
.getDefaultRaw(null))
.put(
HierarchyCircuitBreakerService.FIELDDATA_CIRCUIT_BREAKER_OVERHEAD_SETTING.getKey(),
HierarchyCircuitBreakerService.FIELDDATA_CIRCUIT_BREAKER_OVERHEAD_SETTING
.getDefaultRaw(null))
.put(
HierarchyCircuitBreakerService.REQUEST_CIRCUIT_BREAKER_LIMIT_SETTING.getKey(),
HierarchyCircuitBreakerService.REQUEST_CIRCUIT_BREAKER_LIMIT_SETTING.getDefaultRaw(
null))
.put(
HierarchyCircuitBreakerService.REQUEST_CIRCUIT_BREAKER_OVERHEAD_SETTING.getKey(),
1.0)
.put(
HierarchyCircuitBreakerService.IN_FLIGHT_REQUESTS_CIRCUIT_BREAKER_LIMIT_SETTING
.getKey(),
HierarchyCircuitBreakerService.IN_FLIGHT_REQUESTS_CIRCUIT_BREAKER_LIMIT_SETTING
.getDefaultRaw(null))
.put(
HierarchyCircuitBreakerService.IN_FLIGHT_REQUESTS_CIRCUIT_BREAKER_OVERHEAD_SETTING
.getKey(),
1.0)
.put(
HierarchyCircuitBreakerService.TOTAL_CIRCUIT_BREAKER_LIMIT_SETTING.getKey(),
HierarchyCircuitBreakerService.TOTAL_CIRCUIT_BREAKER_LIMIT_SETTING.getDefaultRaw(
null))
.build();
assertAcked(
client().admin().cluster().prepareUpdateSettings().setTransientSettings(resetSettings));
}
public void testRequestBreaker() throws Exception {
if (noopBreakerUsed()) {
logger.info("--> noop breakers used, skipping test");
return;
}
assertAcked(
prepareCreate(
"cb-test", 1, Settings.builder().put(SETTING_NUMBER_OF_REPLICAS, between(0, 1))));
Client client = client();
// Make request breaker limited to a small amount
Settings resetSettings =
Settings.builder()
.put(
HierarchyCircuitBreakerService.REQUEST_CIRCUIT_BREAKER_LIMIT_SETTING.getKey(),
"10b")
.build();
assertAcked(
client.admin().cluster().prepareUpdateSettings().setTransientSettings(resetSettings));
// 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("cb-test", "type", Long.toString(id)).setSource("test", id));
}
indexRandom(true, reqs);
// A cardinality aggregation uses BigArrays and thus the REQUEST breaker
try {
client
.prepareSearch("cb-test")
.setQuery(matchAllQuery())
.addAggregation(cardinality("card").field("test"))
.get();
fail("aggregation should have tripped the breaker");
} catch (Exception e) {
String errMsg =
"CircuitBreakingException[[request] Data too large, data for [<reused_arrays>] would be larger than limit of [10/10b]]";
assertThat(
"Exception: [" + e.toString() + "] should contain a CircuitBreakingException",
e.toString(),
containsString(errMsg));
}
}
