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From "Tyler Hobbs (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-12311) Propagate TombstoneOverwhelmingException to the client
Date Wed, 19 Oct 2016 22:29:58 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-12311?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Tyler Hobbs updated CASSANDRA-12311:
------------------------------------
    Component/s: Observability

> Propagate TombstoneOverwhelmingException to the client
> ------------------------------------------------------
>
>                 Key: CASSANDRA-12311
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-12311
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Observability
>            Reporter: Geoffrey Yu
>            Assignee: Geoffrey Yu
>            Priority: Minor
>              Labels: client-impacting, doc-impacting
>             Fix For: 3.10
>
>         Attachments: 12311-dtest.txt, 12311-trunk-v2.txt, 12311-trunk-v3.txt, 12311-trunk-v4.txt,
12311-trunk-v5.txt, 12311-trunk.txt
>
>
> Right now if a data node fails to perform a read because it ran into a {{TombstoneOverwhelmingException}},
it only responds back to the coordinator node with a generic failure. Under this scheme, the
coordinator won't be able to know exactly why the request failed and subsequently the client
only gets a generic {{ReadFailureException}}. It would be useful to inform the client that
their read failed because we read too many tombstones. We should have the data nodes reply
with a failure type so the coordinator can pass this information to the client.



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