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https://issues.apache.org/jira/browse/CASSANDRA-9445?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14572822#comment-14572822
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Philip Thompson commented on CASSANDRA-9445:
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That is true. [~chengren311], can you please provide your schema, as well as
some details on the workload that was failing?
> Read timeout on the tables where we recreated previously dropped column with
> different type
> -------------------------------------------------------------------------------------------
>
> Key: CASSANDRA-9445
> URL: https://issues.apache.org/jira/browse/CASSANDRA-9445
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Reporter: Cheng Ren
>
> We had 10%~20% read request timeout on one specific table in our cassandra
> cluster.
> This happened since we added the column to that table with type of
> map<text,text>, ran the pipeline against it adding data and then dropped the
> column and re-added it as a blob with the same name. The pipeline run to
> populate the blob data happened as the problem began.
> The issue got fixed as soon as we dropped the column.
> Any clue why this is happening ? is there any similar issue been reported
> with this kind of column change?
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