我正在尝试将Spark Streaming作业的结果写入Druid数据源。 Spark成功地完成了它的工作，并将手交给德鲁伊。德鲁伊开始索引，但没有写任何东西。
我的代码和日志如下：
import org.apache.spark._
import org.apache.spark._
import org.apache.spark.streaming._
import org.apache.spark.streaming.StreamingContext
import org.apache.kafka.clients.consumer.ConsumerRecord
import org.apache.kafka.common.serialization.StringDeserializer
import org.apache.spark.streaming.kafka010._
impor org.apache.spark.streaming.kafka010.LocationStrategies.PreferConsistent
import org.apache.spark.streaming.kafka010.ConsumerStrategies.Subscribe
import scala.util.parsing.json._
import com.metamx.tranquility.spark.BeamRDD._
import org.joda.time.{DateTime, DateTimeZone}
object MyDirectStreamDriver {
def main(args:Array[String]) {
val sc = new SparkContext()
val ssc = new StreamingContext(sc, Minutes(5))
val kafkaParams = Map[String, Object](
"bootstrap.servers" -> "[$hadoopURL]:6667",
"key.deserializer" -> classOf[StringDeserializer],
"value.deserializer" -> classOf[StringDeserializer],
"group.id" -> "use_a_separate_group_id_for_each_stream",
"auto.offset.reset" -> "latest",
"enable.auto.commit" -> (false: java.lang.Boolean)
)
val eventStream = KafkaUtils.createDirectStream[String, String](
ssc,
PreferConsistent,
Subscribe[String, String](Array("events_test"), kafkaParams))
val t = eventStream.map(record => record.value).flatMap(_.split("(?<=\\}),(?=\\{)")).
map(JSON.parseRaw(_).getOrElse(new JSONObject(Map(""-> ""))).asInstanceOf[JSONObject]).
map( new DateTime(), x => (x.obj.getOrElse("OID", "").asInstanceOf[String], x.obj.getOrElse("STATUS", "").asInstanceOf[Double].toInt)).
map(x => MyEvent(x._1, x._2, x._3))
t.saveAsTextFiles("/user/username/result", "txt")
t.foreachRDD(rdd => rdd.propagate(new MyEventBeamFactory))
ssc.start
ssc.awaitTermination
}
}
case class MyEvent (time: DateTime,oid: String, status: Int)
{
@JsonValue
def toMap: Map[String, Any] = Map(
"timestamp" -> (time.getMillis / 1000),
"oid" -> oid,
"status" -> status
)
}
object MyEvent {
implicit val MyEventTimestamper = new Timestamper[MyEvent] {
def timestamp(a: MyEvent) = a.time
}
val Columns = Seq("time", "oid", "status")
def fromMap(d: Dict): MyEvent = {
MyEvent(
new DateTime(long(d("timestamp")) * 1000),
str(d("oid")),
int(d("status"))
)
}
}
import org.apache.curator.framework.CuratorFrameworkFactory
import org.apache.curator.retry.BoundedExponentialBackoffRetry
import io.druid.granularity._
import io.druid.query.aggregation.LongSumAggregatorFactory
import com.metamx.common.Granularity
import org.joda.time.Period
class MyEventBeamFactory extends BeamFactory[MyEvent]
{
// Return a singleton, so the same connection is shared across all tasks in the same JVM.
def makeBeam: Beam[MyEvent] = MyEventBeamFactory.BeamInstance
object MyEventBeamFactory {
val BeamInstance: Beam[MyEvent] = {
// Tranquility uses ZooKeeper (through Curator framework) for coordination.
val curator = CuratorFrameworkFactory.newClient(
"{IP_2}:2181",
new BoundedExponentialBackoffRetry(100, 3000, 5)
)
curator.start()
val indexService = DruidEnvironment("druid/overlord") // Your overlord's druid.service, with slashes replaced by colons.
val discoveryPath = "/druid/discovery" // Your overlord's druid.discovery.curator.path
val dataSource = "events_druid"
val dimensions = IndexedSeq("oid")
val aggregators = Seq(new LongSumAggregatorFactory("status", "status"))
// Expects simpleEvent.timestamp to return a Joda DateTime object.
DruidBeams
.builder((event: MyEvent) => event.time)
.curator(curator)
.discoveryPath(discoveryPath)
.location(DruidLocation(indexService, dataSource))
.rollup(DruidRollup(SpecificDruidDimensions(dimensions), aggregators, QueryGranularities.MINUTE))
.tuning(
ClusteredBeamTuning(
segmentGranularity = Granularity.HOUR,
windowPeriod = new Period("PT10M"),
partitions = 1,
replicants = 1
)
)
.buildBeam()
}
}
}
这是德鲁伊索引任务日志：（index_realtime_events_druid_2017-12-28T13:00:00.000Z_0_0）
2017-12-28T13:05:19,299 INFO [main] io.druid.indexing.worker.executor.ExecutorLifecycle - Running with task: {
"type" : "index_realtime",
"id" : "index_realtime_events_druid_2017-12-28T13:00:00.000Z_0_0",
"resource" : {
"availabilityGroup" : "events_druid-2017-12-28T13:00:00.000Z-0000",
"requiredCapacity" : 1
},
"spec" : {
"dataSchema" : {
"dataSource" : "events_druid",
"parser" : {
"type" : "map",
"parseSpec" : {
"format" : "json",
"timestampSpec" : {
"column" : "timestamp",
"format" : "iso",
"missingValue" : null
},
"dimensionsSpec" : {
"dimensions" : [ "oid" ],
"spatialDimensions" : [ ]
}
}
},
"metricsSpec" : [ {
"type" : "longSum",
"name" : "status",
"fieldName" : "status",
"expression" : null
} ],
"granularitySpec" : {
"type" : "uniform",
"segmentGranularity" : "HOUR",
"queryGranularity" : {
"type" : "duration",
"duration" : 60000,
"origin" : "1970-01-01T00:00:00.000Z"
},
"rollup" : true,
"intervals" : null
}
},
"ioConfig" : {
"type" : "realtime",
"firehose" : {
"type" : "clipped",
"delegate" : {
"type" : "timed",
"delegate" : {
"type" : "receiver",
"serviceName" : "firehose:druid:overlord:events_druid-013-0000-0000",
"bufferSize" : 100000
},
"shutoffTime" : "2017-12-28T14:15:00.000Z"
},
"interval" : "2017-12-28T13:00:00.000Z/2017-12-28T14:00:00.000Z"
},
"firehoseV2" : null
},
"tuningConfig" : {
"type" : "realtime",
"maxRowsInMemory" : 75000,
"intermediatePersistPeriod" : "PT10M",
"windowPeriod" : "PT10M",
"basePersistDirectory" : "/tmp/1514466313873-0",
"versioningPolicy" : {
"type" : "intervalStart"
},
"rejectionPolicy" : {
"type" : "none"
},
"maxPendingPersists" : 0,
"shardSpec" : {
"type" : "linear",
"partitionNum" : 0
},
"indexSpec" : {
"bitmap" : {
"type" : "concise"
},
"dimensionCompression" : "lz4",
"metricCompression" : "lz4",
"longEncoding" : "longs"
},
"buildV9Directly" : true,
"persistThreadPriority" : 0,
"mergeThreadPriority" : 0,
"reportParseExceptions" : false,
"handoffConditionTimeout" : 0,
"alertTimeout" : 0
}
},
"context" : null,
"groupId" : "index_realtime_events_druid",
"dataSource" : "events_druid"
}
2017-12-28T13:05:19,312 INFO [main] io.druid.indexing.worker.executor.ExecutorLifecycle - Attempting to lock file[/apps/druid/tasks/index_realtime_events_druid_2017-12-28T13:00:00.000Z_0_0/lock].
2017-12-28T13:05:19,313 INFO [main] io.druid.indexing.worker.executor.ExecutorLifecycle - Acquired lock file[/apps/druid/tasks/index_realtime_events_druid_2017-12-28T13:00:00.000Z_0_0/lock] in 1ms.
2017-12-28T13:05:19,317 INFO [task-runner-0-priority-0] io.druid.indexing.overlord.ThreadPoolTaskRunner - Running task: index_realtime_events_druid_2017-12-28T13:00:00.000Z_0_0
2017-12-28T13:05:19,323 INFO [task-runner-0-priority-0] io.druid.indexing.overlord.TaskRunnerUtils - Task [index_realtime_events_druid_2017-12-28T13:00:00.000Z_0_0] location changed to [TaskLocation{host='hadooptest9.{host}', port=8100}].
2017-12-28T13:05:19,323 INFO [task-runner-0-priority-0] io.druid.indexing.overlord.TaskRunnerUtils - Task [index_realtime_events_druid_2017-12-28T13:00:00.000Z_0_0] status changed to [RUNNING].
2017-12-28T13:05:19,327 INFO [main] org.eclipse.jetty.server.Server - jetty-9.3.19.v20170502
2017-12-28T13:05:19,350 INFO [task-runner-0-priority-0] io.druid.segment.realtime.plumber.RealtimePlumber - Creating plumber using rejectionPolicy[io.druid.segment.realtime.plumber.NoopRejectionPolicyFactory$1@7925d517]
2017-12-28T13:05:19,351 INFO [task-runner-0-priority-0] io.druid.server.coordination.CuratorDataSegmentServerAnnouncer - Announcing self[DruidServerMetadata{name='hadooptest9.{host}:8100', host='hadooptest9.{host}:8100', maxSize=0, tier='_default_tier', type='realtime', priority='0'}] at [/druid/announcements/hadooptest9.{host}:8100]
2017-12-28T13:05:19,382 INFO [task-runner-0-priority-0] io.druid.segment.realtime.plumber.RealtimePlumber - Expect to run at [2017-12-28T14:10:00.000Z]
2017-12-28T13:05:19,392 INFO [task-runner-0-priority-0] io.druid.segment.realtime.plumber.RealtimePlumber - Starting merge and push.
2017-12-28T13:05:19,392 INFO [task-runner-0-priority-0] io.druid.segment.realtime.plumber.RealtimePlumber - Found [0] segments. Attempting to hand off segments that start before [1970-01-01T00:00:00.000Z].
2017-12-28T13:05:19,392 INFO [task-runner-0-priority-0] io.druid.segment.realtime.plumber.RealtimePlumber - Found [0] sinks to persist and merge
2017-12-28T13:05:19,451 INFO [task-runner-0-priority-0] io.druid.segment.realtime.firehose.EventReceiverFirehoseFactory - Connecting firehose: firehose:druid:overlord:events_druid-013-0000-0000
2017-12-28T13:05:19,453 INFO [task-runner-0-priority-0] io.druid.segment.realtime.firehose.EventReceiverFirehoseFactory - Found chathandler of class[io.druid.segment.realtime.firehose.ServiceAnnouncingChatHandlerProvider]
2017-12-28T13:05:19,453 INFO [task-runner-0-priority-0] io.druid.segment.realtime.firehose.ServiceAnnouncingChatHandlerProvider - Registering Eventhandler[firehose:druid:overlord:events_druid-013-0000-0000]
2017-12-28T13:05:19,454 INFO [task-runner-0-priority-0] io.druid.curator.discovery.CuratorServiceAnnouncer - Announcing service[DruidNode{serviceName='firehose:druid:overlord:events_druid-013-0000-0000', host='hadooptest9.{host}', port=8100}]
2017-12-28T13:05:19,502 INFO [main] com.sun.jersey.guice.spi.container.GuiceComponentProviderFactory - Registering com.fasterxml.jackson.jaxrs.json.JacksonJsonProvider as a provider class
2017-12-28T13:05:19,502 INFO [main] com.sun.jersey.guice.spi.container.GuiceComponentProviderFactory - Registering com.fasterxml.jackson.jaxrs.smile.JacksonSmileProvider as a provider class
2017-12-28T13:05:19,502 INFO [main] com.sun.jersey.guice.spi.container.GuiceComponentProviderFactory - Registering io.druid.server.initialization.jetty.CustomExceptionMapper as a provider class
2017-12-28T13:05:19,502 INFO [main] com.sun.jersey.guice.spi.container.GuiceComponentProviderFactory - Registering io.druid.server.StatusResource as a root resource class
2017-12-28T13:05:19,505 INFO [main] com.sun.jersey.server.impl.application.WebApplicationImpl - Initiating Jersey application, version 'Jersey: 1.19.3 10/24/2016 03:43 PM'
2017-12-28T13:05:19,515 INFO [task-runner-0-priority-0] io.druid.segment.realtime.firehose.ServiceAnnouncingChatHandlerProvider - Registering Eventhandler[events_druid-013-0000-0000]
2017-12-28T13:05:19,515 INFO [task-runner-0-priority-0] io.druid.curator.discovery.CuratorServiceAnnouncer - Announcing service[DruidNode{serviceName='events_druid-013-0000-0000', host='hadooptest9.{host}', port=8100}]
2017-12-28T13:05:19,529 WARN [task-runner-0-priority-0] org.apache.curator.utils.ZKPaths - The version of ZooKeeper being used doesn't support Container nodes. CreateMode.PERSISTENT will be used instead.
2017-12-28T13:05:19,535 INFO [task-runner-0-priority-0] io.druid.server.metrics.EventReceiverFirehoseRegister - Registering EventReceiverFirehoseMetric for service [firehose:druid:overlord:events_druid-013-0000-0000]
2017-12-28T13:05:19,536 INFO [task-runner-0-priority-0] io.druid.data.input.FirehoseFactory - Firehose created, will shut down at: 2017-12-28T14:15:00.000Z
2017-12-28T13:05:19,574 INFO [main] com.sun.jersey.guice.spi.container.GuiceComponentProviderFactory - Binding io.druid.server.initialization.jetty.CustomExceptionMapper to GuiceManagedComponentProvider with the scope "Singleton"
2017-12-28T13:05:19,576 INFO [main] com.sun.jersey.guice.spi.container.GuiceComponentProviderFactory - Binding com.fasterxml.jackson.jaxrs.json.JacksonJsonProvider to GuiceManagedComponentProvider with the scope "Singleton"
2017-12-28T13:05:19,583 INFO [main] com.sun.jersey.guice.spi.container.GuiceComponentProviderFactory - Binding com.fasterxml.jackson.jaxrs.smile.JacksonSmileProvider to GuiceManagedComponentProvider with the scope "Singleton"
2017-12-28T13:05:19,845 INFO [main] com.sun.jersey.guice.spi.container.GuiceComponentProviderFactory - Binding io.druid.server.http.security.StateResourceFilter to GuiceInstantiatedComponentProvider
2017-12-28T13:05:19,863 INFO [main] com.sun.jersey.guice.spi.container.GuiceComponentProviderFactory - Binding io.druid.server.http.SegmentListerResource to GuiceInstantiatedComponentProvider
2017-12-28T13:05:19,874 INFO [main] com.sun.jersey.guice.spi.container.GuiceComponentProviderFactory - Binding io.druid.server.QueryResource to GuiceInstantiatedComponentProvider
2017-12-28T13:05:19,876 INFO [main] com.sun.jersey.guice.spi.container.GuiceComponentProviderFactory - Binding io.druid.segment.realtime.firehose.ChatHandlerResource to GuiceInstantiatedComponentProvider
2017-12-28T13:05:19,880 INFO [main] com.sun.jersey.guice.spi.container.GuiceComponentProviderFactory - Binding io.druid.query.lookup.LookupListeningResource to GuiceInstantiatedComponentProvider
2017-12-28T13:05:19,882 INFO [main] com.sun.jersey.guice.spi.container.GuiceComponentProviderFactory - Binding io.druid.query.lookup.LookupIntrospectionResource to GuiceInstantiatedComponentProvider
2017-12-28T13:05:19,883 INFO [main] com.sun.jersey.guice.spi.container.GuiceComponentProviderFactory - Binding io.druid.server.StatusResource to GuiceManagedComponentProvider with the scope "Undefined"
2017-12-28T13:05:19,896 WARN [main] com.sun.jersey.spi.inject.Errors - The following warnings have been detected with resource and/or provider classes:
WARNING: A HTTP GET method, public void io.druid.server.http.SegmentListerResource.getSegments(long,long,long,javax.servlet.http.HttpServletRequest) throws java.io.IOException, MUST return a non-void type.
2017-12-28T13:05:19,905 INFO [main] org.eclipse.jetty.server.handler.ContextHandler - Started o.e.j.s.ServletContextHandler@2fba0dac{/,null,AVAILABLE}
2017-12-28T13:05:19,914 INFO [main] org.eclipse.jetty.server.AbstractConnector - Started ServerConnector@25218a4d{HTTP/1.1,[http/1.1]}{0.0.0.0:8100}
2017-12-28T13:05:19,914 INFO [main] org.eclipse.jetty.server.Server - Started @6014ms
2017-12-28T13:05:19,915 INFO [main] io.druid.java.util.common.lifecycle.Lifecycle$AnnotationBasedHandler - Invoking start method[public void io.druid.server.listener.announcer.ListenerResourceAnnouncer.start()] on object[io.druid.query.lookup.LookupResourceListenerAnnouncer@426710f0].
2017-12-28T13:05:19,919 INFO [main] io.druid.server.listener.announcer.ListenerResourceAnnouncer - Announcing start time on [/druid/listeners/lookups/__default/hadooptest9.{host}:8100]
2017-12-28T13:05:20,517 WARN [task-runner-0-priority-0] io.druid.segment.realtime.firehose.PredicateFirehose - [0] InputRow(s) ignored as they do not satisfy the predicate
这是index_realtime_events_druid_2017-12-28T13:00:00.000Z_0_0有效负载：
{
"task":"index_realtime_events_druid_2017-12-28T13:00:00.000Z_0_0","payload":{
"id":"index_realtime_events_druid_2017-12-28T13:00:00.000Z_0_0","resource":{
"availabilityGroup":"events_druid-2017-12-28T13:00:00.000Z-0000","requiredCapacity":1},"spec":{
"dataSchema":{
"dataSource":"events_druid","parser":{
"type":"map","parseSpec":{
"format":"json","timestampSpec":{
"column":"timestamp","format":"iso","missingValue":null},"dimensionsSpec":{
"dimensions":["oid"],"spatialDimensions":[]}}},"metricsSpec":[{
"type":"longSum","name":"status","fieldName":"status","expression":null}],"granularitySpec":{
"type":"uniform","segmentGranularity":"HOUR","queryGranularity":{
"type":"duration","duration":60000,"origin":"1970-01-01T00:00:00.000Z"},"rollup":true,"intervals":null}},"ioConfig":{
"type":"realtime","firehose":{
"type":"clipped","delegate":{
"type":"timed","delegate":{
"type":"receiver","serviceName":"firehose:druid:overlord:events_druid-013-0000-0000","bufferSize":100000},"shutoffTime":"2017-12-28T14:15:00.000Z"},"interval":"2017-12-28T13:00:00.000Z/2017-12-28T14:00:00.000Z"},"firehoseV2":null},"tuningConfig":{
"type":"realtime","maxRowsInMemory":75000,"intermediatePersistPeriod":"PT10M","windowPeriod":"PT10M","basePersistDirectory":"/tmp/1514466313873-0","versioningPolicy":{
"type":"intervalStart"},"rejectionPolicy":{
"type":"none"},"maxPendingPersists":0,"shardSpec":{
"type":"linear","partitionNum":0},"indexSpec":{
"bitmap":{
"type":"concise"},"dimensionCompression":"lz4","metricCompression":"lz4","longEncoding":"longs"},"buildV9Directly":true,"persistThreadPriority":0,"mergeThreadPriority":0,"reportParseExceptions":false,"handoffConditionTimeout":0,"alertTimeout":0}},"context":null,"groupId":"index_realtime_events_druid","dataSource":"events_druid"}}
这是火花作业stderr的结束
50:09 INFO ZooKeeper: Client environment:os.version=3.10.0-514.10.2.el7.x86_64
17/12/28 14:50:09 INFO ZooKeeper: Client environment:user.name=yarn
17/12/28 14:50:09 INFO ZooKeeper: Client environment:user.home=/home/yarn
17/12/28 14:50:09 INFO ZooKeeper: Client environment:user.dir=/data1/hadoop/yarn/local/usercache/hdfs/appcache/application_1512485869804_6924/container_e58_1512485869804_6924_01_000002
17/12/28 14:50:09 INFO ZooKeeper: Initiating client connection, connectString={IP2}:2181 sessionTimeout=60000 watcher=org.apache.curator.ConnectionState@5967905
17/12/28 14:50:09 INFO ClientCnxn: Opening socket connection to server {IP2}/{IP2}:2181. Will not attempt to authenticate using SASL (unknown error)
17/12/28 14:50:09 INFO ClientCnxn: Socket connection established, initiating session, client: /{IP6}:42704, server: {IP2}/{IP2}:2181
17/12/28 14:50:09 INFO ClientCnxn: Session establishment complete on server {IP2}/{IP2}:2181, sessionid = 0x25fa4ea15980119, negotiated timeout = 40000
17/12/28 14:50:10 INFO ConnectionStateManager: State change: CONNECTED
17/12/28 14:50:10 INFO Version: HV000001: Hibernate Validator 5.1.3.Final
17/12/28 14:50:10 INFO JsonConfigurator: Loaded class[class io.druid.guice.ExtensionsConfig] from props[druid.extensions.] as [ExtensionsConfig{searchCurrentClassloader=true, directory='extensions', hadoopDependenciesDir='hadoop-dependencies', hadoopContainerDruidClasspath='null', loadList=null}]
17/12/28 14:50:10 INFO LoggingEmitter: Start: started [true]
17/12/28 14:50:11 INFO FinagleRegistry: Adding resolver for scheme[disco].
17/12/28 14:50:11 INFO CachedKafkaConsumer: Initial fetch for spark-executor-use_a_separate_group_id_for_each_stream events_test 0 6658
17/12/28 14:50:12 INFO ClusteredBeam: Global latestCloseTime[2017-12-28T12:00:00.000Z] for identifier[druid:overlord/events_druid] has moved past timestamp[2017-12-28T12:00:00.000Z], not creating merged beam
17/12/28 14:50:12 INFO ClusteredBeam: Turns out we decided not to actually make beams for identifier[druid:overlord/events_druid] timestamp[2017-12-28T12:00:00.000Z]. Returning None.
17/12/28 14:50:12 WARN MapPartitioner: Cannot partition object of class[class MyEvent] by time and dimensions. Consider implementing a Partitioner.
17/12/28 14:50:12 INFO ClusteredBeam: Global latestCloseTime[2017-12-28T12:00:00.000Z] for identifier[druid:overlord/events_druid] has moved past timestamp[2017-12-28T12:00:00.000Z], not creating merged beam
17/12/28 14:50:12 INFO ClusteredBeam: Turns out we decided not to actually make beams for identifier[druid:overlord/events_druid] timestamp[2017-12-28T12:00:00.000Z]. Returning None.
17/12/28 14:50:12 INFO ClusteredBeam: Global latestCloseTime[2017-12-28T12:00:00.000Z] for identifier[druid:overlord/events_druid] has moved past timestamp[2017-12-28T12:00:00.000Z], not creating merged beam
17/12/28 14:50:12 INFO ClusteredBeam: Turns out we decided not to actually make beams for identifier[druid:overlord/events_druid] timestamp[2017-12-28T12:00:00.000Z]. Returning None.
17/12/28 14:50:12 INFO ClusteredBeam: Global latestCloseTime[2017-12-28T12:00:00.000Z] for identifier[druid:overlord/events_druid] has moved past timestamp[2017-12-28T12:00:00.000Z], not creating merged beam
17/12/28 14:50:12 INFO ClusteredBeam: Turns out we decided not to actually make beams for identifier[druid:overlord/events_druid] timestamp[2017-12-28T12:00:00.000Z]. Returning None.
17/12/28 14:50:12 INFO ClusteredBeam: Global latestCloseTime[2017-12-28T12:00:00.000Z] for identifier[druid:overlord/events_druid] has moved past timestamp[2017-12-28T12:00:00.000Z], not creating merged beam
17/12/28 14:50:12 INFO ClusteredBeam: Turns out we decided not to actually make beams for identifier[druid:overlord/events_druid] timestamp[2017-12-28T12:00:00.000Z]. Returning None.
17/12/28 14:50:16 INFO Executor: Finished task 0.0 in stage 1.0 (TID 1). 1541 bytes result sent to driver
我还将结果写入文本文件以确保数据即将到来并格式化。以下是几行文本文件：
MyEvent(2017-12-28T16:10:00.387+03:00,0010,1)
MyEvent(2017-12-28T16:10:00.406+03:00,0030,1)
MyEvent(2017-12-28T16:10:00.417+03:00,0010,1)
MyEvent(2017-12-28T16:10:00.431+03:00,0010,1)
MyEvent(2017-12-28T16:10:00.448+03:00,0010,1)
MyEvent(2017-12-28T16:10:00.464+03:00,0030,1)
非常感谢帮助。谢谢。
答案 0 :(得分：1)
通过将timestampSpec添加到DruidBeams来解决此问题：
DruidBeams
.builder((event: MyEvent) => event.time)
.curator(curator)
.discoveryPath(discoveryPath)
.location(DruidLocation(indexService, dataSource))
.rollup(DruidRollup(SpecificDruidDimensions(dimensions), aggregators, QueryGranularities.MINUTE))
.tuning(
ClusteredBeamTuning(
segmentGranularity = Granularity.HOUR,
windowPeriod = new Period("PT10M"),
partitions = 1,
replicants = 1
)
)
.timestampSpec(new TimestampSpec("timestamp", "posix", null))
.buildBeam()