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https://issues.apache.org/jira/browse/YARN-9016?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16707379#comment-16707379
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Sushil Ks commented on YARN-9016:
---------------------------------
Hi [~rohithsharma], Thanks for reviewing the patch :) please find my comments
below,
1. Since initially *TimelineSchemaCreator* was specific to HBase didn't
consider of changing it, now it makes sense to create an interface or abstract
class with the same name. So the *TimelineSchemaCreator* can be moved to the
*hadoop-yarn-server-timelineservice* module and each backend can have their
specific implementation, what do you think?
2 & 3, sure will add *document-store* for readability.
Also not sure why some unit tests are getting skipped while building, am seeing
the following error from build machine
{code:java}
[WARNING] The requested profile "parallel-tests" could not be activated because
it does not exist.
[WARNING] The requested profile "yarn-ui" could not be activated because it
does not exist.
[ERROR] Failed to execute goal
org.apache.maven.plugins:maven-surefire-plugin:3.0.0-M1:test (default-test) on
project hadoop-yarn-server-resourcemanager: There was a timeout or other error
in the fork -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e
switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please
read the following articles:
[ERROR] [Help 1]
http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException
[ERROR]
[ERROR] After correcting the problems, you can resume the build with the
command{code}
Sure, let me know if there are any more comments :)
> DocumentStore as a backend for ATSv2
> ------------------------------------
>
> Key: YARN-9016
> URL: https://issues.apache.org/jira/browse/YARN-9016
> Project: Hadoop YARN
> Issue Type: New Feature
> Components: ATSv2
> Reporter: Sushil Ks
> Assignee: Sushil Ks
> Priority: Major
> Attachments: YARN-9016.001.patch
>
>
> h1. Document Store for ATSv2
> The Document Store for ATSv2 is a framework for plugging in
> any Document Store Vendor as a backend for ATSv2 i.e Azure CosmosDB ,
> MongoDB, ElasticSearch etc.
> * Supports multiple Document Store Vendors like CosmosDB, ElasticSearch,
> MongoDB etc by just adding new configurations properties and writing Document
> Store reader and writer clients.
> * Currently has support for CosmosDB.
> * All writes are Async and buffered, latest document would be flushed to the
> store either if the document buffer gets full or periodically at every flush
> interval in background without adding any additional latency to the running
> jobs..
> * All the REST API's of Timeline Reader Server are supported.
> h4.
> *How to enable?*
> Add the flowing properties under *yarn-site.xml*
> {code:java}
> <!-- config required for ATSv2 to use DocumentStore-->
> <property>
> <name>yarn.timeline-service.writer.class</name>
>
> <value>org.apache.hadoop.yarn.server.timelineservice.storage.documentstore.DocumentStoreTimelineWriterImpl</value>
> </property>
> <property>
> <name>yarn.timeline-service.reader.class</name>
> <value>org.apache.hadoop.yarn.server.timelineservice.storage.documentstore.DocumentStoreTimelineReaderImpl</value>
> </property>
> <property>
> <name>yarn.timeline-service.documentstore.db-name</name>
> <value>YOUR_DATABASE_NAME</value> <!-- default is timeline_service -->
> </property>{code}
> h3. *Creating DB and Collections for storing documents*
> This is similar to HBase *TimelineSchemaCreator* the
> following command needs to be executed once for setting up the database and
> collections for storing documents.
> {code:java}
> hadoop
> org.apache.hadoop.yarn.server.timelineservice.documentstore.DocumentStoreCollectionCreator
> {code}
> h3. *Azure CosmosDB*
> To use Azure CosmosDB as a DocumentStore for ATSv2, the additional
> properties under *yarn-site.xml* is required..
> {code:java}
> <!-- config required for using Azure CosmosDB as a DocumentStore for ATSv2 -->
> <property>
> <name>yarn.timeline-service.store-type</name>
> <value>COSMOS_DB</value>
> </property>
> <property>
> <name>yarn.timeline-service.cosmos-db.endpoint</name>
> <value>http://YOUR_AZURE_COSMOS_DB_URL:443/</value>
> </property>
> <property>
> <name>yarn.timeline-service.cosmos-db.masterkey</name>
> <value>YOUR_AZURE_COSMOS_DB_MASTER_KEY_CREDENTIAL</value>
> </property>
> {code}
>
> *Testing locally*
> In order to test the Azure CosmosDB as a DocumentStore
> locally, install the emulator from
> [here|https://docs.microsoft.com/en-us/azure/cosmos-db/local-emulator] and
> start it locally. Set the endpoint and master key under *yarn-site.xml* as
> mentioned above and run any example job like DistributedShell etc. Later you
> can check the data explorer UI of Azure CosmosDB locally to query the
> documents or even launch the *TimelineReader* locally and fetch/query the
> data from REST API's.
>
>
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