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https://issues.apache.org/jira/browse/YARN-9016?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sushil Ks updated YARN-9016:
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Attachment: (was: YARN-9016.001.patch)
> 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
>
> h1. Document Store for ATSv2
> The Document Store for ATSv2 is a framework for plugging in
> any Document Store 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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