java.lang.RuntimeException: Could not instantiate generated class 'GroupAggsHandler$1677' at org.apache.flink.table.runtime.generated.GeneratedClass.newInstance(GeneratedClass.java:74) ~[flink-table-runtime-1.15.0.jar:1.15.0] at org.apache.flink.table.runtime.operators.aggregate.MiniBatchLocalGroupA...
近期我们发现 Kubernetes 环境下的 Flink 集群有个奇怪的现象：在算子并行度较大（例如超过 50）时，...
Caused by:java.lang.RuntimeException:org.apache.flink.runtime.client.JobInitializationException:Could not instantiate JobManager.at org.apache.flink.util.ExceptionUtils.rethrow(ExceptionUtils.java:309)at org.apache.flink.util.function.FunctionUtils.lambda$uncheckedFunction$2(FunctionUtils.java:76)at java....
Caused by: java.lang.RuntimeException: org.apache.flink.runtime.client.JobInitializationException: Could not instantiate JobManager. at org.apache.flink.util.ExceptionUtils.rethrow(ExceptionUtils.java:309) at org.apache.flink.util.function.FunctionUtils.lambda$uncheckedFunction$2(FunctionUtils.java:76) ...
flink写入时怎么解决数据更新问题 flink execute,前情回顾:《Flink执行计划第一层——StreamTransformation》《Flink执行计划第二层——StreamGraph》《Flink执行计划第三层——JobGraph》一、LocalStreamEnvironment::execute《入门Flink的第一个程序——WordCount》真正
在《Flink On Yarn客户端提交过程》中说到,最后AM进程启动的入口类是YarnJobClusterEntrypoint,那么Jobmanager的启动过程也就应该从这里开始进行。 JobManager启动入口 public static void main(String[] args) { // startup checks and logging EnvironmentInformation.logEnvironmentInfo(LOG, YarnJobClusterEntrypoint.cl...
JobManager 的启动流程分为三个部分: 初始化 8 个基础服务 创建工厂实例 通过不同的工厂实例创建三大核心组件 ResourceManager、Dispatcher、WebMonitorEndpoint 主节点准备工作 我们以 Standalone 模式为例,下同 找到主节点启动类 StandaloneSessionClusterEntrypoint ...
Job failed during initialization of JobManager org.apache.flink.runtime.client.JobInitializationException: Could not instantiate JobManager. at org.apache.flink.runtime.dispatcher.Dispatcher.lambda$createJobManagerRunner$5(Dispatcher.java:463) at java.util.concurrent.CompletableFuture$AsyncSupply.ru...
Caused by: org.apache.flink.runtime.leaderretrieval.LeaderRetrievalException: Couldnotretrieve the leader gateway. at org.apache.flink.runtime.util.LeaderRetrievalUtils.retrieveLeaderGateway(LeaderRetrievalUtils.java:79) at org.apache.flink.client.program.ClusterClient.getJobManagerGateway(ClusterClient.java...
首先说明,TaskManager的启动是在JobMaster为Job申请slot时开始进行的,代码如下: //SchedulerImp类 private SlotSharingManager.MultiTaskSlotLocality allocateMultiTaskSlot( AbstractID groupId, SlotSharingManager slotSharingManager, SlotProfile slotProfile,