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Tag: GroupState
2 items with this tag.
Feb 28, 2026
flatMapGroupsWithState:任意有状态逻辑的终极武器
Spark
Structured-Streaming
flatMapGroupsWithState
mapGroupsWithState
GroupState
有状态算子
状态机
超时机制
欺诈检测
Feb 28, 2026
状态过期与 TTL:让 State Store 不再无限膨胀
Spark
Structured-Streaming
Watermark
TTL
状态过期
GroupState
dropDuplicates
事件时间