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https://issues.apache.org/jira/browse/CASSANDRA-13549?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16025706#comment-16025706
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Akhil Mehra commented on CASSANDRA-13549:
-----------------------------------------
I have committed the changes to the following two branches.
[13549-trunk|https://github.com/amehra/cassandra/tree/13549-trunk]
[13549-3.11|https://github.com/amehra/cassandra/tree/13549-3.11]
Both branches have 3.10.0 driver in them and the required changes in
formatting.py. If you want me to drop it back to 3.9.0 python driver please let
me know.
Is there any way I can run the dtests on these two branches on
http://cassci.datastax.com/ ?
Thanks
> Cqlsh throws and error when querying a duration data type
> ---------------------------------------------------------
>
> Key: CASSANDRA-13549
> URL: https://issues.apache.org/jira/browse/CASSANDRA-13549
> Project: Cassandra
> Issue Type: Bug
> Components: CQL
> Environment: Cassandra 3.10 dev environment running on a MacOS Sierra
> Reporter: Akhil Mehra
> Assignee: Benjamin Lerer
>
> h3. Overview
> Querying duration related data from the cqlsh prompt results in an error.
> Consider the following create table and insert statement.
> {code:title=Table and insert statement with duration data
> type|borderStyle=solid}
> CREATE TABLE duration_test (
> primary_key text,
> col20 duration,
> PRIMARY KEY (primary_key)
> );
> INSERT INTO duration_test (primary_key, col20) VALUES ('primary_key_example',
> 1y5mo89h4m48s);
> {code}
> On executing a select query on col20 in cqlsh I get an error "Failed to
> format value '"\x00\xfe\x02GS\xfc\xa5\xc0\x00' : 'ascii' codec can't decode
> byte 0xfe in position 2: ordinal not in range(128)"
> {code:title=Duration Query|borderStyle=solid}
> Select col20 from duration_test;
> {code}
> h3. Investigation
> On investigating this further I found that the current python Cassandra
> driver used found in
> lib/cassandra-driver-internal-only-3.7.0.post0-2481531.zip does not seem to
> support duration data type. This was added in Jan this year
> https://github.com/datastax/python-driver/pull/689.
> So I downloaded the latest driver release
> https://github.com/datastax/python-driver/releases/tag/3.9.0. I embedded the
> latest driver into cassandra-driver-internal-only-3.7.0.post0-2481531.zip.
> This fixed the driver related issue but there was still a formatting issue.
> I then went on to modify the format_value_duration methos in the
> pylib/cqlshlib/formatting.py. Diff posted below
> {code}
> @formatter_for('Duration')
> def format_value_duration(val, colormap, **_):
> - buf = six.iterbytes(val)
> - months = decode_vint(buf)
> - days = decode_vint(buf)
> - nanoseconds = decode_vint(buf)
> - return format_python_formatted_type(duration_as_str(months, days,
> nanoseconds), colormap, 'duration')
> + return format_python_formatted_type(duration_as_str(val.months,
> val.days, val.nanoseconds), colormap, 'duration')
> {code}
> This resulted in fixing the issue and duration types are now correctly
> displayed.
> Happy to fix the issue if I can get some guidance on:
> # If this is a valid issue. Tried searching JIRA but did not find anything
> reported.
> # If my assumptions are correct i.e. this is actually a bug
> # how to package the new driver into the source code.
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