AmatyaAvadhanula 393e9b68a8 Add config to limit task slots for parallel indexing tasks (#12221) ... In extreme cases where many parallel indexing jobs are submitted together, it is possible that the `ParallelIndexSupervisorTasks` take up all slots leaving no slot to schedule their own sub-tasks thus stalling progress of all the indexing jobs. Key changes: - Add config `druid.indexer.runner.parallelIndexTaskSlotRatio` to limit the task slots for `ParallelIndexSupervisorTasks` per worker - `ratio = 1` implies supervisor tasks can use all slots on a worker if needed (default behavior) - `ratio = 0` implies supervisor tasks can not use any slot on a worker (actually, at least 1 slot is always available to ensure progress of parallel indexing jobs) - `ImmutableWorkerInfo.canRunTask()` - `WorkerHolder`, `ZkWorker`, `WorkerSelectUtils`		2022-02-15 23:15:09 +05:30
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src	Add config to limit task slots for parallel indexing tasks (#12221)	2022-02-15 23:15:09 +05:30
pom.xml	Support for hadoop 3 via maven profiles (#11794)	2021-10-30 22:46:24 +05:30