[jira] [Commented] (CASSANDRA-7192) QueryTrace for a paginated query exists only for the first element of the list returned by getAllExecutionInfo()

["Jeremiah Jordan (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CASSANDRA-7192?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13992786#comment-13992786 ] 

Jeremiah Jordan commented on CASSANDRA-7192:
--------------------------------------------

My guess is this probably belongs in the Java Driver JIRA: https://datastax-oss.atlassian.net/browse/JAVA
Unless there is a server side bug with tracing and paging interacting, but I'm guessing this is probably just having to do with how the java driver queries the information.

> QueryTrace for a paginated query exists only for the first element of the list returned by getAllExecutionInfo()
> ----------------------------------------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-7192
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-7192
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>         Environment: A Cassandra 2.0.6 cluster of 16 nodes running on Ubuntu 12.04.2 LTS, using the Java Driver in the client.
>            Reporter: Roger Hernandez
>            Priority: Minor
>
> Within the Java Driver, with tracing enabled, I execute a large query that benefits from automatic pagination (with fetchSize=10).
> I make sure to go through all of the ResultSet, and by the end of the query I call getAllExecutionInfo() on the ResultSet. This returns an ArrayList of 9 ExecutionInfo elements (the number of pages it requested from Cassandra).
> When accessing the QueryTrace in the ExecutionInfo from the ArrayList at index 0, I can retrieve the information without issues. However, the first is the only one that has QueryTrace information, every other ExecutionInfo of the array returns a NULL QueryTrace object.



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