@SuppressWarnings({"ConstantConditions", "unchecked"})
@Test
@BadApple
public void testIndexShardLifecycleLeak() throws Exception {
client()
.admin()
.indices()
.prepareCreate("test")
.setSettings(
ImmutableSettings.builder()
.put("index.number_of_shards", 1)
.put("index.number_of_replicas", 0))
.execute()
.actionGet();
client().admin().cluster().prepareHealth().setWaitForGreenStatus().execute().actionGet();
IndicesService indicesService = cluster().getInstance(IndicesService.class);
IndexService indexService = indicesService.indexServiceSafe("test");
Injector indexInjector = indexService.injector();
IndexShard shard = indexService.shardSafe(0);
Injector shardInjector = indexService.shardInjector(0);
performCommonOperations();
List<WeakReference> indexReferences = new ArrayList<WeakReference>();
List<WeakReference> shardReferences = new ArrayList<WeakReference>();
// TODO if we could iterate over the already created classes on the injector, we can just add
// them here to the list
// for now, we simple add some classes that make sense
// add index references
indexReferences.add(new WeakReference(indexService));
indexReferences.add(new WeakReference(indexInjector));
indexReferences.add(new WeakReference(indexService.mapperService()));
for (DocumentMapper documentMapper : indexService.mapperService()) {
indexReferences.add(new WeakReference(documentMapper));
}
indexReferences.add(new WeakReference(indexService.aliasesService()));
indexReferences.add(new WeakReference(indexService.analysisService()));
indexReferences.add(new WeakReference(indexService.fieldData()));
indexReferences.add(new WeakReference(indexService.queryParserService()));
// add shard references
shardReferences.add(new WeakReference(shard));
shardReferences.add(new WeakReference(shardInjector));
indexService = null;
indexInjector = null;
shard = null;
shardInjector = null;
client().admin().indices().prepareDelete().execute().actionGet();
for (int i = 0; i < 100; i++) {
System.gc();
int indexNotCleared = 0;
for (WeakReference indexReference : indexReferences) {
if (indexReference.get() != null) {
indexNotCleared++;
}
}
int shardNotCleared = 0;
for (WeakReference shardReference : shardReferences) {
if (shardReference.get() != null) {
shardNotCleared++;
}
}
logger.info(
"round {}, indices {}/{}, shards {}/{}",
i,
indexNotCleared,
indexReferences.size(),
shardNotCleared,
shardReferences.size());
if (indexNotCleared == 0 && shardNotCleared == 0) {
break;
}
}
// Thread.sleep(1000000);
for (WeakReference indexReference : indexReferences) {
assertThat(
"dangling index reference: " + indexReference.get(), indexReference.get(), nullValue());
}
for (WeakReference shardReference : shardReferences) {
assertThat(
"dangling shard reference: " + shardReference.get(), shardReference.get(), nullValue());
}
}
