Detailed Query Analysis

Click on a specific partition in Execution Statistics table, the CQL Engine Detailed Query Analysis page is displayed.

This page contains details about each execution operator of CQL query for a particular partition of a stage in pipeline.

• Query ID: System generated identifier for query

• Query Text: Query String

• Partition ID: All operator details are corresponding to this partition id.

• Operator Statistics:

  • Operator ID: System Generated Identifiers

  • Total Input Events: Total number of input events received by each operator.

  • Total Output Events: Total number of output events generated by each operator.

  • Total Input Heartbeats: Total number of heartbeat events received by each operator.

  • Total Output Heartbeats: Total number of heartbeat events generated by each operator.

  • Throughput(events/second): Ratio of total input events processed and total time spent in processing for each operator.

  • Latency(ms): Total turnaround time to process an event for each operator.

• Operator DAG: This is visual representation of the query plan. The DAG will show the parent-child details for each operator. You can further drill down the execution statistics of operator. Please click on the operator which will open CQL Operator Details Page.