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[Minor][Doc] Minor doc change for YARN credential providers #16444

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[Minor][Doc] Minor doc change for YARN credential providers #16444

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f89a31a
Minor doc change for credential providers.
viirya Dec 31, 2016
4b14c52
Address comment.
viirya Jan 1, 2017
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6 changes: 3 additions & 3 deletions docs/running-on-yarn.md
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Expand Up @@ -506,7 +506,7 @@ Spark supports integrating with other security-aware services through Java Servi
`java.util.ServiceLoader`). To do that, implementations of `org.apache.spark.deploy.yarn.security.ServiceCredentialProvider`
should be available to Spark by listing their names in the corresponding file in the jar's
`META-INF/services` directory. These plug-ins can be disabled by setting
`spark.yarn.security.tokens.{service}.enabled` to `false`, where `{service}` is the name of
`spark.yarn.security.credentials.{service}.enabled` to `false`, where `{service}` is the name of
credential provider.

## Configuring the External Shuffle Service
Expand Down Expand Up @@ -570,8 +570,8 @@ the Spark configuration must be set to disable token collection for the services
The Spark configuration must include the lines:

```
spark.yarn.security.tokens.hive.enabled false
spark.yarn.security.tokens.hbase.enabled false
spark.yarn.security.credentials.hive.enabled false
spark.yarn.security.credentials.hbase.enabled false
```

The configuration option `spark.yarn.access.namenodes` must be unset.
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2 changes: 2 additions & 0 deletions .../src/main/scala/org/apache/spark/deploy/yarn/security/ConfigurableCredentialManager.scala
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Expand Up @@ -38,6 +38,8 @@ import org.apache.spark.util.Utils
*
* Also each credential provider is controlled by
* spark.yarn.security.credentials.{service}.enabled, it will not be loaded in if set to false.
* For example, Hive's credential provider [[HiveCredentialProvider]] can be enabled/disabled by
* the configuration spark.yarn.security.credentials.hive.enabled.
*/
private[yarn] final class ConfigurableCredentialManager(
sparkConf: SparkConf, hadoopConf: Configuration) extends Logging {
Expand Down