[IOTDB-4005] Pipeline fragmentInstance to implement parallel execution #8432
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lancelly
reviewed
Dec 23, 2022
server/src/main/java/org/apache/iotdb/db/mpp/plan/planner/PipelineDriverFactory.java
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JackieTien97
requested changes
Jan 9, 2023
server/src/main/java/org/apache/iotdb/db/mpp/execution/fragment/FragmentInstanceExecution.java
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server/src/main/java/org/apache/iotdb/db/mpp/execution/driver/DataDriverContext.java
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server/src/main/java/org/apache/iotdb/db/mpp/execution/driver/DataDriverContext.java
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server/src/main/java/org/apache/iotdb/db/mpp/execution/driver/DriverContext.java
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server/src/main/java/org/apache/iotdb/db/mpp/execution/fragment/FragmentInstanceContext.java
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server/src/main/java/org/apache/iotdb/db/mpp/plan/planner/LocalExecutionPlanContext.java
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server/src/main/java/org/apache/iotdb/db/mpp/plan/planner/PipelineDriverFactory.java
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server/src/main/java/org/apache/iotdb/db/mpp/plan/planner/LocalExecutionPlanContext.java
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server/src/main/java/org/apache/iotdb/db/mpp/plan/planner/OperatorTreeGenerator.java
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JackieTien97
approved these changes
Jan 10, 2023
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In order to make full use of the single machine multi-core performance, and improve the CPU utilization and query performance, we further split the Fragment instance into multiple pipelines for processing.
为了充分利用单机多核性能，提升CPU利用率和查询性能，我们把 Fragment instance 进一步拆分为多条 pipeline 进行处理。
Performance Test results:
Single data region situation(Single fragment instance for one query):
Our weekly test, it's single sensor query, so there is no obvious performance improvement.
