Use topic level throughput information when partition level information is unavailable.#871
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...ver/src/main/java/com/linkedin/datastream/server/assignment/LoadBasedTaskCountEstimator.java
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...rver/src/main/java/com/linkedin/datastream/server/assignment/LoadBasedPartitionAssigner.java
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…on is unavailable. (linkedin#871) * Use topic level throughput information when partition level information is unavailable * Refactor code Co-authored-by: Vaibhav Maheshwari <vmaheshw@vmaheshw-mn1.linkedin.biz>
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If a partition level information is unavailable, the task estimation and assignment can utilize topic level information. It will not accurate but will be approximate and better than the default information. This will help in balancing larger set of topic partitions and better balance.