Tian Jiang created IOTDB-373:
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Summary: [Distributed] Query coordinating
Key: IOTDB-373
URL: https://issues.apache.org/jira/browse/IOTDB-373
Project: Apache IoTDB
Issue Type: Improvement
Reporter: Tian Jiang
When using more than one replicas, query options are enriched and complicated.
To ensure load balancing, we may have to choose the node with lowest load to
perform the query, which requests knowing the load of each node and a formula
to rank the nodes based on their status.
We can also issue the same query to multiple replicas and pick up the fastest
one to respond to the user as MapReduce has done. But this may result in
resource wasting unless we feasibly support quick query cancellation.
In a word, we should decide which replica(s) to serve a query and what
information we need to collect to make the decision.
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