WebJul 23, 2024 · Flink provides flexible metadata management capabilities, that aim at reducing the cumbersome, repetitive work needed before querying the data such as … WebJan 11, 2024 · In Flink, each window has a Trigger and a function (ProcessWindowFunction, ReduceFunction, AggregateFunction or FoldFunction) …
flink中reduce/aggregate/fold/apply - CSDN文库
Web/**Applies the given fold function to each window. The window function is called for each * evaluation of the window for each key individually. The output of the reduce function is * interpreted as a regular non-windowed stream. * * @param function The fold function. * @return The data stream that is the result of applying the fold function to the window. * ... Weborigin: apache/flink ... since the fold function is used internally * in a {@code FoldingState}. */ @Test ... This allows functions that work with Tuples to reuse objects in order to reduce pressure on the garbage collector. Warning: If you subclass Tuple2, then be sure to either . hub football camp
org.apache.flink.api.common.functions.FoldFunction
WebRich functions provide, in addition to the user-defined function (map, reduce, etc), four methods: open, close, getRuntimeContext, and setRuntimeContext. These are useful for … WebAug 23, 2015 · The various fold functions discussed so far correspond to various kinds of tree traversals: A fold function (as implemented here) is more properly called a “pre … Weborg.apache.flink.api.common.functions.FoldFunction. Java Examples. The following examples show how to use org.apache.flink.api.common.functions.FoldFunction . You … hub foods zumbrota mn hours