Key Default Type Description
cluster.evenly-spread-out-slots
false Boolean Enable the slot spread out allocation strategy. This strategy tries to spread out the slots evenly across all available TaskExecutors.
cluster.intercept-user-system-exit
DISABLED

Enum

Possible values: [DISABLED, LOG, THROW]
Flag to check user code exiting system by terminating JVM (e.g., System.exit())
  • DISABLED - Flink is not monitoring or intercepting calls to System.exit()
  • LOG - Log exit attempt with stack trace but still allowing exit to be performed
  • THROW - Throw exception when exit is attempted disallowing JVM termination

Note that this configuration option can interfere with cluster.processes.halt-on-fatal-error: In intercepted user-code, a call to System.exit() will not cause the JVM to halt, when THROW is configured.
cluster.io-pool.size
(none) Integer The size of the IO executor pool used by the cluster to execute blocking IO operations (Master as well as TaskManager processes). By default it will use 4 * the number of CPU cores (hardware contexts) that the cluster process has access to. Increasing the pool size allows to run more IO operations concurrently.
cluster.processes.halt-on-fatal-error
false Boolean Whether processes should halt on fatal errors instead of performing a graceful shutdown. In some environments (e.g. Java 8 with the G1 garbage collector), a regular graceful shutdown can lead to a JVM deadlock. See FLINK-16510 for details.
cluster.registration.error-delay
10000 Long The pause made after an registration attempt caused an exception (other than timeout) in milliseconds.
cluster.registration.initial-timeout
100 Long Initial registration timeout between cluster components in milliseconds.
cluster.registration.max-timeout
30000 Long Maximum registration timeout between cluster components in milliseconds.
cluster.registration.refused-registration-delay
30000 Long The pause made after the registration attempt was refused in milliseconds.
cluster.services.shutdown-timeout
30000 Long The shutdown timeout for cluster services like executors in milliseconds.