Package org.apache.druid.server.metrics

Class SubqueryCountStatsProvider

  • public class SubqueryCountStatsProvider
extends Object
    Collects the metrics corresponding to the subqueries and their materialization.

    • Constructor Detail

      • SubqueryCountStatsProvider

        public SubqueryCountStatsProvider()

    • Method Detail

      • subqueriesWithRowLimit

        public long subqueriesWithRowLimit()
        Returns:
        Count of subqueries where the results are materialized as rows i.e. List<Object>

      • subqueriesWithByteLimit

        public long subqueriesWithByteLimit()
        Returns:
        Count of subqueries where the results are materialized as Frame

      • subqueriesFallingBackToRowLimit

        public long subqueriesFallingBackToRowLimit()
        Returns:
        Count of subqueries where the results are

      • subqueriesFallingBackDueToUnsufficientTypeInfo

        public long subqueriesFallingBackDueToUnsufficientTypeInfo()
        Returns:
        Count of the subset of subqueries that are falling back due to insufficient type information in the RowSignature. This is expected to be the most common and already known cause of fallback, therefore this is added as a separate metric

      • subqueriesFallingBackDueUnknownReason

        public long subqueriesFallingBackDueUnknownReason()
        Returns:
        Count of the subset of subqueries that are falling back due to insufficient an unknown error. This can be due to a few known reasons like columnar frames not supporting the array types right now, or due to unknown errors while performing the materialization

      • queriesExceedingRowLimit

        public long queriesExceedingRowLimit()
        Returns:
        Number of queries that fail due to their subqueries exceeding the prescribed row limit

      • queriesExceedingByteLimit

        public long queriesExceedingByteLimit()
        Returns:
        Number of subqueries that fail due to their subqueries exceeding the prescribed byte limit

      • incrementSubqueriesWithRowLimit

        public void incrementSubqueriesWithRowLimit()

      • incrementSubqueriesWithByteLimit

        public void incrementSubqueriesWithByteLimit()

      • incrementSubqueriesFallingBackToRowLimit

        public void incrementSubqueriesFallingBackToRowLimit()

      • incrementSubqueriesFallingBackDueToUnsufficientTypeInfo

        public void incrementSubqueriesFallingBackDueToUnsufficientTypeInfo()

      • incrementSubqueriesFallingBackDueToUnknownReason

        public void incrementSubqueriesFallingBackDueToUnknownReason()

      • incrementQueriesExceedingRowLimit

        public void incrementQueriesExceedingRowLimit()

      • incrementQueriesExceedingByteLimit

        public void incrementQueriesExceedingByteLimit()