YARN-8845. Removed unused hadoop.registry.rm reference.
Contributed by Íñigo Goiri
(cherry picked from commit bf04f19456
)
This commit is contained in:
parent
89d4481020
commit
5813c1de56
|
@ -2669,22 +2669,6 @@
|
|||
|
||||
<!-- YARN registry -->
|
||||
|
||||
<property>
|
||||
<name>hadoop.registry.rm.enabled</name>
|
||||
<value>false</value>
|
||||
<description>
|
||||
Is the registry enabled in the YARN Resource Manager?
|
||||
|
||||
If true, the YARN RM will, as needed.
|
||||
create the user and system paths, and purge
|
||||
service records when containers, application attempts
|
||||
and applications complete.
|
||||
|
||||
If false, the paths must be created by other means,
|
||||
and no automatic cleanup of service records will take place.
|
||||
</description>
|
||||
</property>
|
||||
|
||||
<property>
|
||||
<name>hadoop.registry.zk.root</name>
|
||||
<value>/registry</value>
|
||||
|
|
|
@ -50,17 +50,6 @@ public interface RegistryConstants {
|
|||
*/
|
||||
String DNS_PREFIX = REGISTRY_PREFIX + "dns.";
|
||||
|
||||
/**
|
||||
* flag to indicate whether or not the registry should
|
||||
* be enabled in the RM: {@value}.
|
||||
*/
|
||||
String KEY_REGISTRY_ENABLED = REGISTRY_PREFIX + "rm.enabled";
|
||||
|
||||
/**
|
||||
* Defaut value for enabling the registry in the RM: {@value}.
|
||||
*/
|
||||
boolean DEFAULT_REGISTRY_ENABLED = false;
|
||||
|
||||
/**
|
||||
* flag to indicate whether or not the registry should
|
||||
* be enabled in the RM: {@value}.
|
||||
|
|
|
@ -36,51 +36,6 @@ the values, so enabling them to read from and potentially write to the registry.
|
|||
## Core Settings
|
||||
|
||||
|
||||
### Enabling the Registry in the Resource Manager
|
||||
|
||||
The Resource Manager manages user directory creation and record cleanup
|
||||
on YARN container/application attempt/application completion.
|
||||
|
||||
```
|
||||
<property>
|
||||
<description>
|
||||
Is the registry enabled in the YARN Resource Manager?
|
||||
|
||||
If true, the YARN RM will, as needed.
|
||||
create the user and system paths, and purge
|
||||
service records when containers, application attempts
|
||||
and applications complete.
|
||||
|
||||
If false, the paths must be created by other means,
|
||||
and no automatic cleanup of service records will take place.
|
||||
</description>
|
||||
<name>hadoop.registry.rm.enabled</name>
|
||||
<value>false</value>
|
||||
</property>
|
||||
```
|
||||
|
||||
If the property is set in `core-site.xml` or `yarn-site.xml`,
|
||||
the YARN Resource Manager will behave as follows:
|
||||
1. On startup: create the initial root paths of `/`, `/services` and `/users`.
|
||||
On a secure cluster, access will be restricted to the system accounts (see below).
|
||||
2. When a user submits a job: create the user path under `/users`.
|
||||
3. When a container is completed: delete from the registry all service records
|
||||
with a `yarn:persistence` field of value `container`, and a `yarn:id` field
|
||||
whose value matches the ID of the completed container.
|
||||
4. When an application attempt is completed: remove all service records with
|
||||
`yarn:persistence` set to `application-attempt` and `yarn:id` set to the
|
||||
pplication attempt ID.
|
||||
5. When an application finishes: remove all service records with
|
||||
`yarn:persistence` set to `application` and `yarn:id` set to the
|
||||
application ID.
|
||||
|
||||
All these operations are asynchronous, so that zookeeper connectivity problems
|
||||
do not delay RM operations or work scheduling.
|
||||
|
||||
If the property `hadoop.registry.rm.enabled` is set to `false`, the RM will
|
||||
not interact with the registry —and the listed operations will not take place.
|
||||
The root paths may be created by other means, but service record cleanup will not take place.
|
||||
|
||||
### Setting the Zookeeper Quorum: `hadoop.registry.zk.quorum`
|
||||
|
||||
This is an essential setting: it identifies the lists of zookeeper hosts
|
||||
|
@ -326,17 +281,6 @@ concluding that the quorum is unreachable and failing.
|
|||
```
|
||||
<!-- YARN registry -->
|
||||
|
||||
<property>
|
||||
<description>
|
||||
Is the registry enabled: does the RM start it up,
|
||||
create the user and system paths, and purge
|
||||
service records when containers, application attempts
|
||||
and applications complete
|
||||
</description>
|
||||
<name>hadoop.registry.rm.enabled</name>
|
||||
<value>false</value>
|
||||
</property>
|
||||
|
||||
<property>
|
||||
<description>
|
||||
A comma separated list of hostname:port pairs defining the
|
||||
|
|
|
@ -379,21 +379,6 @@ lack this string before attempting to parse the data with a JSON parser.
|
|||
|
||||
### YARN Persistence policies
|
||||
|
||||
The YARN Resource Manager integration integrates cleanup of service records
|
||||
as an application, attempt or container is completed.
|
||||
|
||||
This allows service to register entries which have a lifespan bound to one of
|
||||
these aspects of YARN applications' lifecycles. This is a feature which is only
|
||||
supported when the RM has had its registry integration enabled via the
|
||||
configuration option `hadoop.registry.rm.enabled`.
|
||||
|
||||
If this option is enabled, and the YARN resource manager is running,
|
||||
it will clean up service records as defined
|
||||
below.
|
||||
|
||||
If the option is disabled, the RM does not provide any registry support at all.
|
||||
|
||||
|
||||
The attributes, `yarn:id` and `yarn:persistence` specify which records
|
||||
*and any child entries* may be deleted as the associated YARN components complete.
|
||||
|
||||
|
|
Loading…
Reference in New Issue