How to reduce delay? - ApsaraVideo Live
try to reduce delay by setting the TS segment duration. This can effectively reduce delay to some extent, but due to the nature of the protocol, it cannot reduce the delay as much as RTMP or FLV can do.
Set GOP frameGOP frame is the video key frame, which ...
MapReduce - MaxCompute
Reduce. Map must be executed first, and then Reduce. The processing logic of Map and Reduce isdefined by the user, but must comply Worker performs computing after reading the data and output the result to Reduce. Because Map Worker outputs the data, it must ...
Java SDK - MaxCompute
the record object of the input table, processes the object into key value and outputs the value to the Reduce stage,or outputs result record to the result table without passing through the Reduce stage. Jobs that do not pass through the Reduce stage, but ...
Adaptive execution of Spark SQL - E-MapReduce
set the number of reduce tasks automatically, solve data skew, and dynamically optimize execution plans.
Solved partitions Currently, the number of tasks in the reduce stage in Spark SQL depends on the value of the spark.sql.shuffle.partition ...
MR limits - MaxCompute
single map instance or reduce instance, including the framework memory (2,048 MB by default) and heap memory of the Java virtual number ranges from 1 to 100,000.
Number limit ...
Lambda functions - Log Service
(ARRAY['k1', 'k2', 'k3'], ARRAY[20, 3, 15]), (k, v) - v 10); --
reduce(arrayT, initialState S, inputFunctionS, T, S, outputFunctionS, R) → R
The reduce() function traverses each element in the array in turn ...
Extended MapReduce - MaxCompute
Reduce operation can be executed after the Reduce operation and inserting a Mapoperation is not necessary. In this way, MaxCompute provides an extensional MapReduce model, that is, numerous Reduce operations can follow a Map operation, such as MapReduce ...
Development and debugging - MaxCompute
the setNumWorkers() method to increase the number of Workers.
You can use the setSplitSize() method to reduce the split of iterations. If applications do not have high requirements on result precision, you can reduce the number of iterations to ...