flink on yarn DataStream api方式写的java job 试验1:不修改任何代码,cancel job后,能从指定的checkpoint恢复 dataStream.addSink(new Sink(config)).name("xxxx").uid("xxxx"); 试验2:只修改sink端的并行度,job无法启动,一直是Initiating状态 dataStream.addSink(new Sink(config)).name("xxxx").uid("xxxx"...
CheckpointStorageLocation 是此次 checkpoint 存储位置的抽象,通过 CheckpointStorage.initializeLocationForCheckpoint() 创建(CheckpointStorage 目前有两个具体实现,分别为 FsCheckpointStorage 和 MemoryBackendCheckpointStorage),CheckpointStorage 则是从 StateBackend 中创建...
Flink 的堆内存除了框架层面使用外,主要是用户定义的状态(含窗口等间接用到的状态)和运行时临时创建的对象占用了大部分内存。 当状态过多时,如果启用了快照(Checkpoint),就会发现每次快照完成后的状态都很大,而且所需时间也较长。Flink 在快照过程中,会对所有状态做全量读取,如果是异步快照的话还有 Copy-On-Write ...
这可能意味着文件已损坏、taskmanager获取了错误的文件，或者序列化程序搞砸了事情。既然你用的是BigIntSe...
Checkpoints.loadCheckpointMetadata(Checkpoints.java:102) at org.apache.flink.runtime.checkpoint.Checkpoints.loadAndValidateCheckpoint(Checkpoints.java:143) at org.apache.flink.runtime.checkpoint.CheckpointCoordinator.restoreSavepoint(CheckpointCoordinator.java:1132) at org.apache.flink.runtime.scheduler....
首先，我们可以考虑Flink自身的CheckPoint功能，它支持HDFS、S3等文件存储系统。底层实现是通过org.apache....
3.restore from the latest checkpoint. 4.after the first checkpoint has done ,the exception will appear {code:java} 2020-12-18 10:40:58java.io.UncheckedIOException: java.io.FileNotFoundException: File does not exist: hdfs://xxxx/day=2020-12-18/hour=10/.uncompacted-part-84db54f8-eda9-...
When you start the job again, you can choose whether to restore the job from the savepoint. If you select Trigger savepoint, a savepoint is created. If Trigger savepoint is not selected, no savepoint is created. By default, the savepoint function is disabled. The lifecycle of a savepoint ...
it is highly recommended to assign these IDs manually. When a savepoint is triggered, a single savepoint file will be created containing the checkpoint metadata. The actual checkpoint state will be kept around in the configured checkpoint directory, for example, with a FsStateBackend or RocksDBSta...
CheckpointCoordinator.this.shutdown();//显示的调用shutdown}catch(Throwable t) { LOG.error("Error during shutdown of checkpoint coordinator via " + "JVM shutdown hook: " +t.getMessage(), t); } } });try{//Add JVM shutdown hook to call shutdown of serviceRuntime.getRuntime().addShut...