Hi， 你可以参阅文档 [1] : 由于 RocksDB 的 JNI API 构建在 byte[] 数据结构之上, 所以每个 key 和 value 最大支持 2^31 字节。 重要信息: RocksDB 合并操作的状态（例如：ListState）累积数据量大小可以超过 2^31 字节，但是会在下一次获取数据时失败。这是当前 RocksDB JNI 的限制。
[1] https://ci.apache.org/projects/flink/flink-docs-release-1.12/zh/ops/state/state_backends.html#rocksdbstatebackend 祝好 唐云 ________________________________ From: a593700624 <[email protected]> Sent: Wednesday, April 28, 2021 15:19 To: [email protected] <[email protected]> Subject: 流跑着跑着，报出了rocksdb层面的错误 Error while retrieving data from RocksDB org.apache.flink.util.FlinkRuntimeException: Error while retrieving data from RocksDB at org.apache.flink.contrib.streaming.state.RocksDBListState.getInternal(RocksDBListState.java:121) at org.apache.flink.contrib.streaming.state.RocksDBListState.get(RocksDBListState.java:111) at org.apache.flink.contrib.streaming.state.RocksDBListState.get(RocksDBListState.java:60) at org.apache.flink.streaming.runtime.operators.windowing.WindowOperator.onEventTime(WindowOperator.java:455) at org.apache.flink.streaming.api.operators.InternalTimerServiceImpl.advanceWatermark(InternalTimerServiceImpl.java:276) at org.apache.flink.streaming.api.operators.InternalTimeServiceManager.advanceWatermark(InternalTimeServiceManager.java:154) at org.apache.flink.streaming.api.operators.AbstractStreamOperator.processWatermark(AbstractStreamOperator.java:568) at org.apache.flink.streaming.runtime.tasks.OneInputStreamTask$StreamTaskNetworkOutput.emitWatermark(OneInputStreamTask.java:167) at org.apache.flink.streaming.runtime.streamstatus.StatusWatermarkValve.findAndOutputNewMinWatermarkAcrossAlignedChannels(StatusWatermarkValve.java:179) at org.apache.flink.streaming.runtime.streamstatus.StatusWatermarkValve.inputWatermark(StatusWatermarkValve.java:101) at org.apache.flink.streaming.runtime.io.StreamTaskNetworkInput.processElement(StreamTaskNetworkInput.java:180) at org.apache.flink.streaming.runtime.io.StreamTaskNetworkInput.emitNext(StreamTaskNetworkInput.java:153) at org.apache.flink.streaming.runtime.io.StreamOneInputProcessor.processInput(StreamOneInputProcessor.java:67) at org.apache.flink.streaming.runtime.tasks.StreamTask.processInput(StreamTask.java:345) at org.apache.flink.streaming.runtime.tasks.mailbox.MailboxProcessor.runMailboxStep(MailboxProcessor.java:191) at org.apache.flink.streaming.runtime.tasks.mailbox.MailboxProcessor.runMailboxLoop(MailboxProcessor.java:181) at org.apache.flink.streaming.runtime.tasks.StreamTask.runMailboxLoop(StreamTask.java:558) at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:530) at org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:721) at org.apache.flink.runtime.taskmanager.Task.run(Task.java:546) at java.lang.Thread.run(Thread.java:748) Caused by: org.rocksdb.RocksDBException: Requested array size exceeds VM limit at org.rocksdb.RocksDB.get(Native Method) at org.rocksdb.RocksDB.get(RocksDB.java:810) at org.apache.flink.contrib.streaming.state.RocksDBListState.getInternal(RocksDBListState.java:118) ... 20 more 能跑几个小时，总会因为这个问题，一直陷入重启 -- Sent from: http://apache-flink.147419.n8.nabble.com/
