org.apache.twill.api

Class Configs.Keys

java.lang.Object

org.apache.twill.api.Configs.Keys

Enclosing class:

Configs

public static final class Configs.Keys
extends Object

Defines keys being used in configuration.

Field Summary

Fields

Modifier and Type	Field and Description
static String	FILE_CONTEXT_CACHE_MAX_SIZE The maximum number of FileContext object cached by the FileContextLocationFactory.
static String	HEAP_RESERVED_MIN_RATIO Configurable ratio between Heap and Reserved Memory.
static String	JAVA_RESERVED_MEMORY_MB Size in MB of reserved memory for Java process (non-heap memory).
static String	LOCAL_STAGING_DIRECTORY Specifies the local directory for twill to store files generated at runtime.
static String	LOCATION_CACHE_ANTIQUE_EXPIRY_MS Setting the expiration time in milliseconds of unused files created by older runs in the location cache.
static String	LOCATION_CACHE_DIR Setting caching directory name for location cache.
static String	LOCATION_CACHE_EXPIRY_MS Setting the expiration time in milliseconds of unused files in the location cache.
static String	LOG_COLLECTION_ENABLED Setting for enabling log collection.
static String	SECURE_STORE_UPDATE_LOCATION_ENABLED Set this to false to disable the secure store updates done by default.
static String	YARN_AM_MEMORY_MB Size in MB for the memory size of the YARN application master container.
static String	YARN_AM_RESERVED_MEMORY_MB Size in MB for the reserved non-heap memory size for the YARN application Java process.
static String	YARN_ATTEMPT_FAILURES_VALIDITY_INTERVAL Interval time in milliseconds for the attempt failures validity interval in YARN.
static String	YARN_MAX_APP_ATTEMPTS Maximum number of attempts to run the application by YARN if there is failure.

Method Summary

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

JAVA_RESERVED_MEMORY_MB

public static final String JAVA_RESERVED_MEMORY_MB

Size in MB of reserved memory for Java process (non-heap memory).

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Constant Field Values

HEAP_RESERVED_MIN_RATIO

public static final String HEAP_RESERVED_MIN_RATIO

Configurable ratio between Heap and Reserved Memory.

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Constant Field Values

SECURE_STORE_UPDATE_LOCATION_ENABLED

public static final String SECURE_STORE_UPDATE_LOCATION_ENABLED

Set this to false to disable the secure store updates done by default.

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Constant Field Values

LOCAL_STAGING_DIRECTORY

public static final String LOCAL_STAGING_DIRECTORY

Specifies the local directory for twill to store files generated at runtime.

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Constant Field Values

LOCATION_CACHE_DIR

public static final String LOCATION_CACHE_DIR

Setting caching directory name for location cache.

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Constant Field Values

LOCATION_CACHE_EXPIRY_MS

public static final String LOCATION_CACHE_EXPIRY_MS

Setting the expiration time in milliseconds of unused files in the location cache. The value should be as long as the period when the same application will get launched again.

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Constant Field Values

LOCATION_CACHE_ANTIQUE_EXPIRY_MS

public static final String LOCATION_CACHE_ANTIQUE_EXPIRY_MS

Setting the expiration time in milliseconds of unused files created by older runs in the location cache. The value should be relatively short as those cache files won't get reused after those applications that are using files completed. This expiry is mainly to workaround the delay that twill detects the set of all running applications from ZK.

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Constant Field Values

YARN_AM_MEMORY_MB

public static final String YARN_AM_MEMORY_MB

Size in MB for the memory size of the YARN application master container.

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Constant Field Values

YARN_AM_RESERVED_MEMORY_MB

public static final String YARN_AM_RESERVED_MEMORY_MB

Size in MB for the reserved non-heap memory size for the YARN application Java process. The actual reserved memory size is limited by the HEAP_RESERVED_MIN_RATIO.

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Constant Field Values

YARN_MAX_APP_ATTEMPTS

public static final String YARN_MAX_APP_ATTEMPTS

Maximum number of attempts to run the application by YARN if there is failure.

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Constant Field Values

YARN_ATTEMPT_FAILURES_VALIDITY_INTERVAL

public static final String YARN_ATTEMPT_FAILURES_VALIDITY_INTERVAL

Interval time in milliseconds for the attempt failures validity interval in YARN. YARN only limit to the maximum attempt count for failures in the given interval.

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Constant Field Values

LOG_COLLECTION_ENABLED

public static final String LOG_COLLECTION_ENABLED

Setting for enabling log collection.

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Constant Field Values

FILE_CONTEXT_CACHE_MAX_SIZE

public static final String FILE_CONTEXT_CACHE_MAX_SIZE

The maximum number of FileContext object cached by the FileContextLocationFactory.

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Constant Field Values