Şu satırı dahil ederiz
import com.hazelcast.mapStore.GenericMapLoader;
Cached Thread çalıştırır. Çıktısı şöyle
... cached.thread-5 - ... Dropping mapping __map-store....
import com.hazelcast.mapStore.GenericMapLoader;
... cached.thread-5 - ... Dropping mapping __map-store....
public abstract class SimpleTestInClusterSupport extends JetTestSupport {... private static TestHazelcastFactory factory; private static Config config; private static HazelcastInstance[] instances; private static HazelcastInstance client; ... @Nonnull protected static HazelcastInstance instance() { return instances[0]; } /** * Returns all instances (except for the client). */ @Nonnull protected static HazelcastInstance[] instances() { return instances; } /** * Returns the client or null, if a client wasn't requested. */ protected static HazelcastInstance client() { return client; } }
LogListener myListener = log -> ... for (HazelcastInstance instance : instances()) { instance.getLoggingService().addLogListener(Level.FINE, myListener); }
import com.hazelcast.config.ListenerConfig;
clientConfig.addListenerConfig(new ListenerConfig((LifecycleListener) event -> { if (event.getState().equals(CLIENT_CONNECTED)) { ... } }));
ClientConnectionProcessListener listener = ... ClientConfig clientConfig = ... clientConfig.addListenerConfig(new ListenerConfig(listener));
import com.hazelcast.spi.properties.ClusterProperty;
Config config = ...config.setProperty(ClusterProperty.OPERATION_CALL_TIMEOUT_MILLIS.getName(), "200";
import com.hazelcast.client.properties.ClientProperty;
ClientConfig clientConfig = new ClientConfig(); clientConfig.setProperty(ClientProperty.INVOCATION_TIMEOUT_SECONDS.getName(), "10");
import com.hazelcast.config.TcpIpConfig;
private NetworkConfig getHazelcastNetworkConfig(){ NetworkConfig networkConfig = new NetworkConfig().setPort(5900) .setPortAutoIncrement(false); JoinConfig joinConfig = new JoinConfig(); TcpIpConfig tcpIpConfig = new TcpIpConfig(); tcpIpConfig.setConnectionTimeoutSeconds(30); tcpIpConfig.setEnabled(true); List<String> memberList = new ArrayList<>(); memberList.add("127.0.0.1:5900"); tcpIpConfig.setMembers(memberList); joinConfig.setTcpIpConfig(tcpIpConfig); networkConfig.setJoin(joinConfig); return networkConfig; }
@Bean("hazelcastInstanceTest") public HazelcastInstance hazelcastInstance() { Config config = new Config(); config.getNetworkConfig().addOutboundPort(0); JoinConfig joinConfig = config.getNetworkConfig().getJoin(); joinConfig.getMulticastConfig() .setEnabled(false); List<String> members = Arrays.asList("MEMBER1:5701","MEMBER2:5701"); joinConfig.getTcpIpConfig() .setMembers(members) .setEnabled(true); return Hazelcast.newHazelcastInstance(config); }
DROP MAPPING "Patient"
DROP MAPPING IF EXISTS "Patient"
import com.hazelcast.client.config.ClientConnectionStrategyConfig;
ClientConfig clientConfig = new ClientConfig(); ... ClientConnectionStrategyConfig connectionStrategyConfig = clientConfig .getConnectionStrategyConfig(); connectionStrategyConfig .setAsyncStart(true) .setReconnectMode(ClientConnectionStrategyConfig.ReconnectMode.ASYNC); ... HazelcastInstance clientInstance = HazelcastClient.newHazelcastClient(clientConfig);
public ClientConnectionStrategyConfig setReconnectMode(ReconnectMode reconnectMode)
... the client will try to reconnect both in the ON and ASYNC modes. The difference comes from the fate of the pending invocations during that time. With the ON mode, the requests are blocked i.e. you don't get a result back for your API calls until the client reconnects. With the ASYNC mode, requests are failed immediately with the HazelcastClientOfflineException.
import com.hazelcast.client.config.ConnectionRetryConfig;
ClientConfig clientConfig = new ClientConfig(); ... ClientConnectionStrategyConfig connectionStrategyConfig = clientConfig .getConnectionStrategyConfig(); connectionStrategyConfig .setAsyncStart(true) .setReconnectMode(ClientConnectionStrategyConfig.ReconnectMode.ASYNC); ConnectionRetryConfig connectionRetryConfig = connectionStrategyConfig .getConnectionRetryConfig(); connectionRetryConfig .setInitialBackoffMillis(1_000) .setMaxBackoffMillis(60_000) .setMultiplier(2) .setClusterConnectTimeoutMillis(50_000) .setJitter(0.2); HazelcastInstance clientInstance = HazelcastClient.newHazelcastClient(clientConfig);
<dependency> <groupId>com.hazelcast</groupId> <artifactId>hazelcast</artifactId> <version>5.1.4</version> </dependency> <dependency> <groupId>com.hazelcast.jet.contrib</groupId> <artifactId>pulsar</artifactId> <version>0.1</version> </dependency> <dependency> <groupId>org.apache.pulsar</groupId> <artifactId>pulsar-client</artifactId> <version>2.10.1</version> </dependency>
StreamSource<Event>source = PulsarSources.pulsarReaderBuilder( topicName, () -> PulsarClient.builder().serviceUrl(“pulsar://localhost:6650”).build(), () -> Schema.JSON(Event.class), Message::getValue) .build(); Pipeline p = Pipeline.create(); p.readFrom(source) .withNativeTimestamps(0) .groupingKey(Event::getUser) .window(sliding(SECONDS.toMillis(60), SECONDS.toMillis(30))) .aggregate(counting()) .writeTo(Sinks.logger(wr -> String.format( “At %s Pulsar got %,d messages in the previous minute from %s.”, TIME_FORMATTER.format(LocalDateTime.ofInstant( Instant.ofEpochMilli(wr.end()), ZoneId.systemDefault())), wr.result(), wr.key()))); JobConfig cfg = new JobConfig() .setProcessingGuarantee(ProcessingGuarantee.EXACTLY_ONCE) .setSnapshotIntervalMillis(SECONDS.toMillis(1)) .setName(“pulsar-airquality-counter”); HazelcastInstance hz = Hazelcast.bootstrappedInstance(); hz.getJet().newJob(p, cfg);
brew tap hazelcast/hz brew install hazelcast@5.2.1
if [ "${PROMETHEUS_PORT}" ]; then echo "Prometheus enabled on port ${PROMETHEUS_PORT}" PROMETHEUS="-javaagent:${HAZELCAST_HOME}/lib/jmx_prometheus_javaagent-${prometheus.version}.jar=${PROMETHEUS_PORT}:${HAZELCAST_HOME}/config/jmx_agent_config.yaml" fi
java -javaagent:./jmx_prometheus_javaagent-0.19.0.jar=12345:config.yaml -jar yourJar.jar
<!-- Prometheus to expose JMX metrics as HTTP endpoint --> <dependency> <groupId>io.prometheus.jmx</groupId> <artifactId>jmx_prometheus_javaagent</artifactId> <version>${prometheus.version}</version> </dependency>
hz -V
import com.hazelcast.config.JoinConfig;
Config config = new Config(); config.setProperty("hazelcast.shutdownhook.enabled", "false"); NetworkConfig network = config.getNetworkConfig(); network.getJoin().getTcpIpConfig().setEnabled(false); network.getJoin().getMulticastConfig().setEnabled(false); HazelcastInstance instance = Hazelcast.newHazelcastInstance(config);
private NetworkConfig getHazelcastNetworkConfig(){ NetworkConfig networkConfig = new NetworkConfig().setPort(5900) .setPortAutoIncrement(false); JoinConfig joinConfig = new JoinConfig(); MulticastConfig multicastConfig = new MulticastConfig(); multicastConfig.setMulticastTimeoutSeconds(30); multicastConfig.setMulticastTimeToLive(255); multicastConfig.setEnabled(false); joinConfig.setMulticastConfig(multicastConfig); networkConfig.setJoin(joinConfig); return networkConfig; }
import com.hazelcast.config.KubernetesConfig;setProperty metodu
Config config = getCommonConfig(); JoinConfig joinConfig = config.getNetworkConfig().getJoin(); joinConfig.getMulticastConfig().setEnabled(false); joinConfig.getKubernetesConfig().setEnabled(true) .setProperty("namespace", namespace) .setProperty("service-name", service);
Config config = new Config(); JoinConfig joinConfig = config.getNetworkConfig().getJoin(); joinConfig.getTcpIpConfig().setEnabled(false); joinConfig.getMulticastConfig().setEnabled(false); config .setClusterName("hz-example") .getNetworkConfig() .setPort(5701) .addOutboundPortDefinition("20000-30000") .getJoin() .getKubernetesConfig() .setEnabled(true) .setProperty("namespace", "example_ns") .setProperty("service-name", "example_service") .setProperty("service-port", "5701");
public final class ExecutionServiceImpl implements ExecutionService {private final ExecutorService cachedExecutorService;...}
run:-1, Foo$$Lambda$1822/0x00000008012739a0 call:539, Executors$RunnableAdapter (java.util.concurrent) run:64, CompletableFutureTask (com.hazelcast.internal.util.executor) run:217, CachedExecutorServiceDelegate$Worker (com.hazelcast.internal.util.executor) runWorker:1136, ThreadPoolExecutor (java.util.concurrent) run:635, ThreadPoolExecutor$Worker (java.util.concurrent) run:833, Thread (java.lang) executeRun:76, HazelcastManagedThread (com.hazelcast.internal.util.executor) run:111, HazelcastManagedThread (com.hazelcast.internal.util.executor)
import com.hazelcast.config.SerializerConfig;
config.getSerializationConfig() .addSerializerConfig(new SerializerConfig() .setTypeClass(CartMapping.class) .setImplementation(cartMappingSerializer()));
hazelcast.operation.generic.thread.count // executor service hazelcast.operation.thread.count // map get put
To execute operations that are not partition-aware, e.g., IExecutorService.executeOnMember(command, member), generic operation threads are used. When the Hazelcast instance is started, an array of operation threads is created. The size of this array has a default value of the number of cores divided by two with a minimum value of 2. It can be changed using the hazelcast.operation.generic.thread.count property.
These threads execute Hazelcast operations, such as map put or get operations
To execute partition-aware operations, an array of operation threads is created. The default value of this array’s size is the number of cores and it has a minimum value of 2. This value can be changed using the hazelcast.operation.thread.count property.
Each operation thread has its own work queue and it consumes messages from this work queue. If a partition-aware operation needs to be scheduled, the right thread is found using the formula below.
threadIndex = partitionId % partition thread-count
After the threadIndex is determined, the operation is put in the work queue of that operation thread. This means the followings:
- A single operation thread executes operations for multiple partitions; if there are 271 partitions and 10 partition threads, then roughly every operation thread executes operations for 27 partitions.
- Each partition belongs to only 1 operation thread. All operations for a partition are always handled by exactly the same operation thread.
- Concurrency control is not needed to deal with partition-aware operations because once a partition-aware operation is put in the work queue of a partition-aware operation thread, only 1 thread is able to touch that partition.
<hazelcast> <properties> <property name="hazelcast.operation.thread.count">10</property> </properties> ... </hazelcast>
Each operation thread has its own work queue and it consumes messages from this work queue. If a partition-aware operation needs to be scheduled, the right thread is found using the formula below.
threadIndex = partitionId % partition thread-count
After the threadIndex is determined, the operation is put in the work queue of that operation thread. This means the followings:
- A single operation thread executes operations for multiple partitions; if there are 271 partitions and 10 partition threads, then roughly every operation thread executes operations for 27 partitions.
- Each partition belongs to only 1 operation thread. All operations for a partition are always handled by exactly the same operation thread.
- Concurrency control is not needed to deal with partition-aware operations because once a partition-aware operation is put in the work queue of a partition-aware operation thread, only 1 thread is able to touch that partition.
hz.XXX.partition-operation.thread-0
interceptPut:641, MapServiceContextImpl (com.hazelcast.map.impl)putInternal:946, DefaultRecordStore (com.hazelcast.map.impl.recordstore)putIfAbsent:1218, DefaultRecordStore (com.hazelcast.map.impl.recordstore)runInternal:39, PutIfAbsentOperation (com.hazelcast.map.impl.operation)run:153, MapOperation (com.hazelcast.map.impl.operation)call:173, MapOperation (com.hazelcast.map.impl.operation)call:295, OperationRunnerImpl (com.hazelcast.spi.impl.operationservice.impl)run:270, OperationRunnerImpl (com.hazelcast.spi.impl.operationservice.impl)run:219, OperationRunnerImpl (com.hazelcast.spi.impl.operationservice.impl)process:180, OperationThread (com.hazelcast.spi.impl.operationexecutor.impl)process:144, OperationThread (com.hazelcast.spi.impl.operationexecutor.impl)loop:134, OperationThread (com.hazelcast.spi.impl.operationexecutor.impl)executeRun:115, OperationThread (com.hazelcast.spi.impl.operationexecutor.impl)run:111, HazelcastManagedThread (com.hazelcast.internal.util.executor)
SORTED (default): For ranged queries such as listing all employees that are between 40 and 60.HASH: For unordered queries such as getting the IDs of employees that are named John.BITMAP: For querying fields that contain few distinct values such as boolean fields. See Bitmap Indexes.
The this keyword acts on the value of a map entry to access properties on it. For example, if a value contains an employee object with the name field, you can access that field, using this.name. Typically, you do not need to specify the this keyword because its presence is assumed if the special attribute __key is not specified. As a result, this.name and name are equivalent.
<map name="indexedMap"> <in-memory-format>NATIVE</in-memory-format> <indexes> <index type="HASH"> <attributes> <attribute>field1</attribute> </attributes> </index> <index type="HASH"> <attributes> <attribute>field2</attribute> </attributes> </index> </indexes> </map> IMap<Integer, FooValue> map = client.getMap("indexedMap"); IntStream.range(0, 5_000_000).forEach(i -> { map.put(i, new FooValue("field1" + 1, "field2" + i));
map.remove(i); });
hazelcast: map: analytics: indexes: - type: HASH attributes: - "component" - type: SORTED attributes: - "instant"
<hazelcast> ... <map name="employees"> <indexes> <index type="HASH"> <attributes> <attribute>name</attribute> </attributes> </index> <index> <attributes> <attribute>age</attribute> </attributes> </index> </indexes> </map> ... </hazelcast>
<indexes> <index> <attributes> <attribute>__key.eventType</attribute> </attributes> </index> </indexes>
CREATE MAPPING people EXTERNAL NAME "database"."collectionName" ( id OBJECT EXTERNAL NAME _id firstName VARCHAR, lastName VARCHAR, employed BOOLEAN ) TYPE Mongo OPTIONS ( 'connectionString' = 'mongodb://127.0.0.1:27017' );
CREATE MAPPING mydetails ( id OBJECT EXTERNAL NAME _id,
first_name VARCHAR,
last_name VARCHAR ) TYPE Mongo OPTIONS ( 'connectionString' = 'mongodb://127.0.0.1:27017', );
# storeJobMetaDataUploadJobMetaDataOperation -> JetServiceBackend|.executeJar -> HazelcastBootstrap
# storeJobMetaDataUploadJobMetaDataOperation -> JetServiceBackend -> JobUploadStore.processJobMetaData# storeJobMultiPartUploadJobMultiPartOperation -> JetServiceBackend -> JobUploadStore.processJobMultipart|.executeJar -> HazelcastBootstrap
SELECT b.* FROM Booking b INNER JOIN Users u ON b.salesManagerId = u.icNumber AND u.dealerCode = 'B129' AND u.status = 1;
import com.hazelcast.jet.cdc.DebeziumCdcSources;
StreamSource<ChangeRecord> source = DebeziumCdcSources .debezium("postgres", PostgresConnector.class) .setProperty("database.server.name",...) .setProperty("database.hostname", ...) .setProperty("database.port", ...) .setProperty("database.user", ...) .setProperty("database.password", ...) .setProperty("database.dbname", ...) .setProperty("table.whitelist", ...) .build(); Pipeline pipeline = Pipeline.create(); pipeline.readFrom(source) .withNativeTimestamps(1) .writeTo(Sinks.list("no_pk"));
Kullanılan harici kütüphanelerin sürümleri bu dosyada Dosyanın yolu şöyle hazelcast/licenses/THIRD-PARTY.txt