Основная программа потребляет события кафки, затем фильтрует - ›карта -› keyBy - ›CEP -› сток. Я написал еще одну отдельную простую программу для чтения каталога контрольных точек, например:
object StateReader extends App {
val path = "file://...."
val env = ExecutionEnvironment.getExecutionEnvironment
val chk = Savepoint.load(env.getJavaEnv, path, new FsStateBackend(path))
val ds = chk.readKeyedState("cep", new CepOperatorReadFunction, TypeInformation.of(classOf[KEY]), TypeInformation.of(classOf[VALUE]))
println(ds.count())
}
class CepOperatorReadFunction extends KeyedStateReaderFunction[KEY, VALUE] {
override def open(parameters: Configuration): Unit = {
}
override def readKey(k: KEY, context: KeyedStateReaderFunction.Context, collector: Collector[VALUE]): Unit = {
}//end readKey
}//end class CepOperatorReadFunction
Однако я получил следующее исключение:
Caused by: java.lang.IllegalStateException: Unexpected state handle type, expected: class org.apache.flink.runtime.state.KeyGroupsStateHandle, but found: class org.apache.flink.runtime.state.IncrementalRemoteKeyedStateHandle
at org.apache.flink.runtime.state.heap.HeapRestoreOperation.restore(HeapRestoreOperation.java:120)
at org.apache.flink.runtime.state.heap.HeapKeyedStateBackendBuilder.build(HeapKeyedStateBackendBuilder.java:114)
... 13 more
Вот некоторые конфигурации в flink-conf.yaml
state.backend: rocksdb
state.checkpoints.dir: hdfs:///.../checkpoints
state.savepoints.dir: hdfs:///.../savepoints
state.backend.incremental: true
state.backend.rocksdb.memory.write-buffer-ratio: 0.6
state.backend.rocksdb.localdir: /var/lib/.../rocksdb
execution.checkpointing.interval: 900000
execution.checkpointing.timeout: 600000
execution.checkpointing.unaligned: true
execution.checkpointing.mode: EXACTLY_ONCE
execution.checkpointing.max-concurrent-checkpoints: 1
execution.checkpointing.min-pause: 0
Есть идеи, почему произошло исключение и как решить проблему?
Спасибо
uid
следующим образом:CEP.pattern(trafficStream.javaStream, pattern, new EventComparator[VALUE]{...}.process(new PatternProcessFunction[VALUE, String]{...}.uid("cep").name("cep")
. когда я попробовалchk.readKeyedState("cep",....)
, я получилCaused by: java.lang.IllegalStateException: Unexpected key-group in restore.
- person Grant   schedule 27.10.2020