org.apache.helix.SystemPropertyKeys Maven / Gradle / Ivy
package org.apache.helix;
public class SystemPropertyKeys {
// Task Driver
public static final String TASK_CONFIG_LIMITATION = "helixTask.configsLimitation";
// ZKHelixManager
public static final String CLUSTER_MANAGER_VERSION = "cluster-manager-version.properties";
public static final String FLAPPING_TIME_WINDOW = "helixmanager.flappingTimeWindow";
// max disconnect count during the flapping time window to trigger HelixManager flapping handling
public static final String MAX_DISCONNECT_THRESHOLD = "helixmanager.maxDisconnectThreshold";
public static final String ZK_SESSION_TIMEOUT = "zk.session.timeout";
public static final String ZK_CONNECTION_TIMEOUT = "zk.connection.timeout";
@Deprecated
public static final String ZK_REESTABLISHMENT_CONNECTION_TIMEOUT =
"zk.connectionReEstablishment.timeout";
public static final String ZK_WAIT_CONNECTED_TIMEOUT = "helixmanager.waitForConnectedTimeout";
/**
* Setting this property to true in system properties enables auto compression in ZK serializer.
* The data will be automatically compressed by
* {@link org.apache.helix.util.GZipCompressionUtil} when being written to Zookeeper
* if size of serialized data exceeds the write size limit, which by default is 1 MB or could be
* set by {@value ZK_SERIALIZER_ZNRECORD_WRITE_SIZE_LIMIT_BYTES}.
*
* The default value is "true" (enabled).
*/
public static final String ZK_SERIALIZER_ZNRECORD_AUTO_COMPRESS_ENABLED =
"zk.serializer.znrecord.auto-compress.enabled";
/**
* This is property that defines the maximum write size in bytes for ZKRecord's two serializers
* before serialized data is ready to be written to ZK. This property applies to
* 1. {@link org.apache.helix.manager.zk.ZNRecordSerializer}
* 2. {@link org.apache.helix.manager.zk.ZNRecordStreamingSerializer}.
*
* If the size of serialized data (no matter whether it is compressed or not) exceeds this
* configured limit, the data will NOT be written to Zookeeper.
*
* Default value is 1 MB. If the configured limit is less than or equal to 0 byte,
* the default value will be used.
*/
public static final String ZK_SERIALIZER_ZNRECORD_WRITE_SIZE_LIMIT_BYTES =
"zk.serializer.znrecord.write.size.limit.bytes";
/**
* This property defines a threshold of ZNRecord size in bytes that the ZK serializer starts to auto compress
* the ZNRecord for write requests if it's size exceeds the threshold.
* If the threshold is not configured or exceed ZKRecord write size limit, default value
* {@value ZK_SERIALIZER_ZNRECORD_WRITE_SIZE_LIMIT_BYTES} will be applied.
*/
public static final String ZK_SERIALIZER_ZNRECORD_AUTO_COMPRESS_THRESHOLD_BYTES =
"zk.serializer.znrecord.auto-compress.threshold.bytes";
public static final String PARTICIPANT_HEALTH_REPORT_LATENCY =
"helixmanager.participantHealthReport.reportLatency";
// Indicate monitoring level of the HelixManager metrics
public static final String MONITOR_LEVEL = "helixmanager.monitorLevel";
/** System property key for jute.maxbuffer */
public static final String JUTE_MAXBUFFER = "jute.maxbuffer";
// CallbackHandler
public static final String ASYNC_BATCH_MODE_ENABLED = "helix.callbackhandler.isAsyncBatchModeEnabled";
public static final String LEGACY_ASYNC_BATCH_MODE_ENABLED = "isAsyncBatchModeEnabled";
// Controller
public static final String CONTROLLER_MESSAGE_PURGE_DELAY = "helix.controller.stages.MessageGenerationPhase.messagePurgeDelay";
// MBean monitor for helix.
public static final String HELIX_MONITOR_TIME_WINDOW_LENGTH_MS = "helix.monitor.slidingTimeWindow.ms";
}