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The Metrics Collecting Application collects data for all of the pre-configured metrics in 

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 and stores them in custom JMX Management Bean (MBean) attributes. Samples of each metric's data is collected every 60 seconds and stored in the <DDF_INSTALL_DIR>/data/metrics directory, with each metric stored in its own .rrd file. Refer to the Metrics Reporting Application for how the stored metrics data can be viewed.

Warning

Do not remove the <DDF_INSTALL_DIR>/data/metrics directory or any files in it. If this is done, then all existing metrics data will be permanently lost.

Also note that if

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is uninstalled/re-installed that all existing metrics data will be permanently lost.

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The metrics currently being collected by 

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 are:

MetricJMX MBean NameMBean Attribute NameDescription
Catalog Exceptionsddf.metrics.catalog:name=ExceptionsCount

A count of the total number of exceptions, of all types, thrown across all catalog queries executed.

Catalog Exceptions Federationddf.metrics.catalog:name=Exceptions.FederationCount

A count of the total number of Federation exceptions thrown across all catalog queries executed.

Catalog Exceptions Source Unavailableddf.metrics.catalog:name=Exceptions.SourceUnavailableCount

A count of the total number of SourceUnavailable exceptions thrown across all catalog queries executed. These exceptions occur when the source being queried is currently not available. 

Catalog Exceptions Unsupported Queryddf.metrics.catalog:name=Exceptions.UnsupportedQueryCount

A count of the total number of UnsupportedQuery exceptions thrown across all catalog queries executed. These exceptions occur when the query being executed is not supported or is invalid.

Catalog Ingest Createdddf.metrics.catalog:name=Ingest.CreatedCountA count of the number of catalog entries created in the Metadata Catalog.
Catalog Ingest Deletedddf.metrics.catalog:name=Ingest.DeletedCountA count of the number of catalog entries updated in the Metadata Catalog.
Catalog Ingest Updatedddf.metrics.catalog:name=Ingest.UpdatedCountA count of the number of catalog entries deleted from the Metadata Catalog.
Catalog Queriesddf.metrics.catalog:name=QueriesCountA count of the number of queries attempted.
Catalog Queries Comparisonddf.metrics.catalog:name=Queries.ComparisonCount

A count of the number of queries attempted that included a string comparison criteria as part of the search criteria, e.g., PropertyIsLike, PropertyIsEqualTo, etc.

Catalog Queries Federatedddf.metrics.catalog:name=Queries.FederatedCountA count of the number of federated queries attempted.
Catalog Queries Fuzzyddf.metrics.catalog:name=Queries.FuzzyCount

A count of the number of queries attempted that included a string comparison criteria with fuzzy searching enabled as part of the search criteria.

Catalog Queries Spatialddf.metrics.catalog:name=Queries.SpatialCount

A count of the number of queries attempted that included

a spatial criteria as part of the search criteria.

Catalog Queries Temporalddf.metrics.catalog:name=Queries.TemporalCount

A count of the number of queries attempted that included a temporal criteria as part of the search criteria.

Catalog Queries Total Resultsddf.metrics.catalog:name=Queries.TotalResultsMean

An average of the total number of results returned

from executed queries. This total results data is averaged over the metric's sample rate.

Catalog Queries Xpathddf.metrics.catalog:name=Queries.XpathCount

A count of the number of queries attempted that included a Xpath criteria as part of the search criteria.

Catalog Resource Retrievalddf.metrics.catalog:name=ResourceCountA count of the number of products retrieved.
Services Latencyddf.metrics.services:name=LatencyMean

The response time from receipt of the request at the endpoint until the response is about to be sent to the client from the endpoint. This response time data is averaged over the metric's sample rate.

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No configuration is made for the Metrics Collecting Application. All of the metrics that it collects data on are either pre-configured in 

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 out of the box, or dynamically created

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