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Posted to commits@druid.apache.org by GitBox <gi...@apache.org> on 2019/04/01 13:21:06 UTC
[GitHub] [incubator-druid] leventov opened a new issue #7390: RPC building
block: future hook for repetitive queries
leventov opened a new issue #7390: RPC building block: future hook for repetitive queries
URL: https://github.com/apache/incubator-druid/issues/7390
Generified idea of #7231. A lot of Druid nodes do RPC to each other with idempotency expectations. If one query is already in-flight, another query can just wait for the same `Future`.
I've once implemented similar functionality here in an ad-hoc manner: https://github.com/metamx/druid/commit/772bd29adb829cb5c09eb233ed3bf93209c2a456#diff-b246e418901d237662b3363cdc950d13R118
We can build something generic and allow to use it in a declarative manner, for example, a static utility that accepts a lambda and creates a hook.
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