common/thrift/Metrics.thrift

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// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
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// under the License.

namespace cpp impala
namespace java org.apache.impala.thrift

// Metric and counter data types.
enum TUnit {
  // A dimensionless numerical quantity
  UNIT,
  // Rate of a dimensionless numerical quantity
  UNIT_PER_SECOND,
  CPU_TICKS,
  BYTES
  BYTES_PER_SECOND,
  TIME_NS,
  DOUBLE_VALUE,
  // No units at all, may not be a numerical quantity
  NONE,
  TIME_MS,
  TIME_S,
  TIME_US
}

// The kind of value that a metric represents.
enum TMetricKind {
  // May go up or down over time
  GAUGE,
  // A strictly increasing value
  COUNTER,
  // Fixed; will never change
  PROPERTY,
  STATS,
  SET,
  HISTOGRAM
}