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GridGain Software Documentation

Kafka Connector Monitoring

Logging

GridGain Kafka Connector logs operationally significant events using Log4j. The Connector package does not include the log4j.properties and log4j.xml configuration files - you need to provide your own configuration. By default, Log4j looks for a configuration file in the classpath. You can also specify the full path of the configuration file with this system property: -Dlog4j.configuration=path/to/log4j-configuration-file.

Every Connector log message starts from a numeric event ID delimited from the rest of the message with the # sign. For example:

15000 # Spring XML configuration path is invalid: /invalid/path/ignite.xml

The Event ID uniquely identifies a problem and the logged event category indicates the event severity:

ERROR: a critical error occurred and the Connector is completely non-operational.

WARNING: the Connector’s health is degraded.

INFO: the Connector is fully operational, the event was logged for informational purposes only.

Event ID

Severity

Description

Action

15000

ERROR

Source or Sink Connector misconfiguration

Analyse error details, fix connector configuration, restart connector.

15001

INFO

Source or Sink connector changed or ignored some configuration to start successfully.

Consider changing connector configuration as described in the message.

15010

ERROR

Sink connector failed to build Ignite object: the data was not streamed into sink Ignite cache.

Analyse error details. Contact GridGain if enhancing Sink connector is needed.

15011

WARNING

Source connector failed to build Kafka schema: schema-less data was streamed into Kafka.

Analyse error details. Contact GridGain if enhancing Source connector is needed.

15020

ERROR

Source connector Backlog infrastructure failure.

Source connector restart or Backlog cleanup might be needed depending on the error details.

15030

WARNING

Source connector continuous query failed. Source connector will be re-trying the operation.

Analyse error details. Something maybe wrong with source Ignite grid.

15040

WARNING

Sink connector failed to write data into sink cache. Sink connector will be re-trying the operation.

Analyse error details. Something maybe wrong with sink Ignite grid.

15050

ERROR

Source or Sink connector failed to instantiate custom data filter.

Make sure Custom data filter JAR is on the Kafka CLASSPATH.

15051

ERROR

Exception thrown from custom data filter.

Review and fix the custom data filter implementation.

15060

INFO

Source or Sink connector connected to Ignite grid.

15061

INFO

Source or Sink connector disconnected from Ignite grid.

15070

ERROR

Ignite Binary Converter failed to convert data to (for Source connector) or from (for Sink Connector) Kafka format.

Analyse error details. Contact GridGain if enhancing Ignite Binary Converter is needed.

Exception Handling

GridGain Kafka Connector’s lifetime is managed by the Kafka Connect framework.

The Connector converts all caught exceptions to Kafka Errors. The framework would either retry the operation or restart the Connector depending on the error.