Greg Hogan created FLINK-7019: --------------------------------- Summary: Rework parallelism in Gelly algorithms and examples Key: FLINK-7019 URL: https://issues.apache.org/jira/browse/FLINK-7019 Project: Flink Issue Type: Sub-task Components: Gelly Affects Versions: 1.4.0 Reporter: Greg Hogan Assignee: Greg Hogan Priority: Minor Fix For: 1.4.0
Flink job parallelism is set with {{ExecutionConfig#setParallelism}} or when {{-p}} on the command-line. The Gelly algorithms {{JaccardIndex}}, {{AdamicAdar}}, {{TriangleListing}}, and {{ClusteringCoefficient}} have intermediate operators which generated output quadratic in the size of input. These algorithms may need to be run with a high parallelism but doing so for all operations is wasteful. Thus was introduced "little parallelism". This can be simplified by moving the parallelism parameter to the new common base class and with the rule-of-thumb to use the algorithm parallelism for all normal (small output) operators. The asymptotically large operators will default to the job parallelism, as will the default algorithm parallelism. -- This message was sent by Atlassian JIRA (v6.4.14#64029)