Key | Default | Type | Description
--- | --- | --- | ---

##### cluster.intercept-user-system-exit

DISABLED

Enum

Flag to check user code exiting system by terminating JVM (e.g., System.exit()). 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.
Possible values:

- "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

##### 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

10 s

Duration

The pause made after an registration attempt caused an exception (other than timeout).

##### cluster.registration.initial-timeout

100 ms

Duration

Initial registration timeout between cluster components.

##### cluster.registration.max-timeout

30 s

Duration

Maximum registration timeout between cluster components.

##### cluster.registration.refused-registration-delay

30 s

Duration

The pause made after the registration attempt was refused.

##### cluster.services.shutdown-timeout

30 s

Duration

The shutdown timeout for cluster services like executors.

##### cluster.thread-dump.stacktrace-max-depth

50

Integer

The maximum stacktrace depth of TaskManager and JobManager's thread dump web-frontend displayed.

##### cluster.uncaught-exception-handling

LOG

Enum

Defines whether cluster will handle any uncaught exceptions by just logging them (LOG mode), or by failing job (FAIL mode)
Possible values:

- "LOG"
- "FAIL"

##### process.jobmanager.working-dir

(none)

String

Working directory for Flink JobManager processes. The working directory can be used to store information that can be used upon process recovery. If not configured, then it will default to `process.working-dir`.

##### process.taskmanager.working-dir

(none)

String

Working directory for Flink TaskManager processes. The working directory can be used to store information that can be used upon process recovery. If not configured, then it will default to `process.working-dir`.

##### process.working-dir

io.tmp.dirs

String

Local working directory for Flink processes. The working directory can be used to store information that can be used upon process recovery. If not configured, then it will default to a randomly picked temporary directory defined via `io.tmp.dirs`.