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Add some multi-stage metrics #12982

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merged 4 commits into from
Apr 25, 2024
Merged

Add some multi-stage metrics #12982

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29288c7
Add some multi-stage metrics
gortiz Apr 22, 2024
516a60e
Simplify change to only add the new metric
gortiz Apr 22, 2024
b789bf2
rename new metrics
gortiz Apr 25, 2024
9de14ba
rollback TOTAL_SERVER_RESPONSE_SIZE unit change
gortiz Apr 25, 2024
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6 changes: 6 additions & 0 deletions .../src/main/java/org/apache/pinot/broker/requesthandler/MultiStageBrokerRequestHandler.java
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Original file line number Diff line number Diff line change
Expand Up @@ -170,6 +170,12 @@ protected BrokerResponse handleRequest(long requestId, String query, @Nullable S

DispatchableSubPlan dispatchableSubPlan = queryPlanResult.getQueryPlan();
Set<String> tableNames = queryPlanResult.getTableNames();

_brokerMetrics.addMeteredGlobalValue(BrokerMeter.MULTI_STAGE_QUERIES_GLOBAL, 1);
for (String tableName : tableNames) {
_brokerMetrics.addMeteredTableValue(tableName, BrokerMeter.MULTI_STAGE_QUERIES, 1);
}

requestContext.setTableNames(List.copyOf(tableNames));

// Compilation Time. This includes the time taken for parsing, compiling, create stage plans and assigning workers.
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19 changes: 19 additions & 0 deletions pinot-common/src/main/java/org/apache/pinot/common/metrics/BrokerMeter.java
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Expand Up @@ -29,7 +29,26 @@ public enum BrokerMeter implements AbstractMetrics.Meter {
UNCAUGHT_POST_EXCEPTIONS("exceptions", true),
HEALTHCHECK_BAD_CALLS("healthcheck", true),
HEALTHCHECK_OK_CALLS("healthcheck", true),
/**
* Number of queries executed.
* <p>
* At this moment this counter does not include queries executed in multi-stage mode.
*/
QUERIES("queries", false),
/**
* Number of multi-stage queries that have been started.
* <p>
* Unlike {@link #MULTI_STAGE_QUERIES}, this metric is global and not attached to a particular table.
* That means it can be used to know how many multi-stage queries have been started in total.
*/
MULTI_STAGE_QUERIES_GLOBAL("queries", true),
/**
* Number of multi-stage queries that have been started touched a given table.
* <p>
* In case the query touch multiple tables (ie using joins)1, this metric will be incremented for each table, so the
* sum of this metric across all tables should be greater or equal than {@link #MULTI_STAGE_QUERIES_GLOBAL}.
*/
MULTI_STAGE_QUERIES("queries", false),

// These metrics track the exceptions caught during query execution in broker side.
// Query rejected by Jersey thread pool executor
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