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Posted to hdfs-issues@hadoop.apache.org by "Íñigo Goiri (Jira)" <ji...@apache.org> on 2023/03/08 21:28:00 UTC
[jira] [Commented] (HDFS-16943) RBF: Implement MySQL based StateStoreDriver
[ https://issues.apache.org/jira/browse/HDFS-16943?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17698085#comment-17698085 ]
Íñigo Goiri commented on HDFS-16943:
------------------------------------
We had something similar in HDFS-13245.
Also [~slfan1989], you had some SQL backends, right?
> RBF: Implement MySQL based StateStoreDriver
> -------------------------------------------
>
> Key: HDFS-16943
> URL: https://issues.apache.org/jira/browse/HDFS-16943
> Project: Hadoop HDFS
> Issue Type: Task
> Components: hdfs, rbf
> Reporter: Simbarashe Dzinamarira
> Assignee: Simbarashe Dzinamarira
> Priority: Major
>
> RBF supports two types of StateStoreDrivers
> # StateStoreFileImpl
> # StateStoreZooKeeperImpl
> I propose implementing a third driver that is backed by MySQL.
> * StateStoreZooKeeperImpl requires an additional Zookeeper cluster.
> * StateStoreFileImpl can use one of the namenodes in the HDFS cluster, but that namenode becomes a single point of failure, introducing coupling between the federated clusters.
> HADOOP-18535 implemented a MySQL token store. When tokens are stored in MySQL, using MySQL for the StateStore as well reduces the number of external dependencies for routers.
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