[
https://issues.apache.org/jira/browse/HDDS-17606?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Elavarasan Kathirvel reassigned HDDS-17606:
-------------------------------------------
Assignee: Gargi Jaiswal
> EC key is read by short-circuit on a co-located client
> ------------------------------------------------------
>
> Key: HDDS-17606
> URL: https://issues.apache.org/jira/browse/HDDS-17606
> Project: Apache Ozone
> Issue Type: Bug
> Reporter: Elavarasan Kathirvel
> Assignee: Gargi Jaiswal
> Priority: Major
> Labels: short-circuit-read
>
> Short-circuit read is enabled on the cluster. An EC key is written and then
> read from a client running on the same host as a datanode.
> An EC key must use the normal read path via gRPC. Short-circuit is for Ratis
> keys.
> *Steps to Reproduce:*
> * Enable Short-Circuit Read (SCR) on the client and all DataNodes.
> ** Run {{ozone debug checknative}} and verify that {{hadoop: true}} is
> displayed on the client and DataNodes.
> * Create an EC bucket, for example, {{{}RS-3-2{}}}.
> * Create a 200 MB key and identify the replica host.
> * Read the key from the replica host. and check the {{localBytesGetBlock}}
> metric increases.
>
> Expected:
> * The read succeeds and the data matches.
> * The client uses the normal read path via gRPC.
> * {{numLocalGetBlock}} and {{localBytesGetBlock}} stays 0 on every datanode,
> including the co-located one.
> Actual:
> * The read succeeds and the data matches.
> * {{numLocalGetBlock}} and {{localBytesGetBlock}} increases on the
> co-located datanode.
--
This message was sent by Atlassian Jira
(v10.3.26#10030026)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
