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flink使用RocksDB增量checkpoints，程序运行一段时间报出：超出物理内存怎么处理？

最近刚刚尝试使用flink 1.9.1 的RocksDB做增量checkpoints；在程序种设置： val backend = new RocksDBStateBackend("hdfs://xx/", true) backend.setPredefinedOptions(PredefinedO...

flink使用RocksDB增量checkpoints，程序运行一段时间报出：超出物理内存

这面还想多请教一下：我程序中每来一条数据都会去读MapState然后覆盖写入新的时间戳，刚刚发现某一条数据读出了两条一样的时间戳，我推断是第一个线程读出来后还没等覆盖掉，第二个线程又读了一遍，导致出现两条一样的时间戳；所以想请问flink中MapState是线程安全的吗？ *来自志愿者整理的fl...

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更新时间 2024-04-30 03:25:13

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实时计算Flink版

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立即开通

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实时同步

MySQL 到 Hologres

Kafka 到 Hologres

功能对比

开源Flink对比

成本优化

作业自动调优