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From Jonathan Ellis <jbel...@gmail.com>
Subject Re: cqlsh not returning the column name of the first column when reversed
Date Sat, 10 Dec 2011 00:17:29 GMT
Several CQL bugs have been fixed since 1.0.0, you should upgrade.

On Tue, Dec 6, 2011 at 2:51 PM, Konstantin Naryshkin
<konstantinn@a-bb.net> wrote:
> I am running Cassandra 1.0.0. I am using cqlsh for inspecting my data
> (very useful tool, thank you whoever wrote it). I notice that when I
> query for the FIRST N REVERSED column, it is omitting the column name
> on the first column. For example,
> cqlsh> SELECT FIRST 1 REVERSED * FROM netflow_raw;
> '{"body":{"src_as":0,"srcport":0,"dstport":148,"nexthop":"0.0.0.0","First":607502600,"prot":2,"src_mask":24,"tos":-64,"input":9721,"Last":607502600,"dOctets":40,"tcp_flags":16,"dst_as":0,"dstaddr":"224.0.0.22","dPkts":1,"output":0,"dst_mask":0,"srcaddr":"172.30.3.5"},"header":{"Sequence
> Number":75569,"RouterIP":"172.29.1.3","UNIX
> Seconds":1323201095,"Source ID":0,"System
> Uptime":607525604},"version":9}' | 'KEY','172.29.1.3,10311323198000'
> cqlsh> SELECT FIRST 2 REVERSED * FROM netflow_raw;
>
> Notice that the KEY is given but not the column name of the single column.
>
> When I ask for more than one column, only one of them has the column
> name omitted:
>
> cqlsh> SELECT FIRST 2 REVERSED * FROM netflow_raw;
> '{"body":{"src_as":0,"srcport":68,"dstport":67,"nexthop":"0.0.0.0","First":607497540,"prot":17,"src_mask":24,"tos":16,"input":9721,"Last":607554532,"dOctets":1968,"tcp_flags":16,"dst_as":0,"dstaddr":"255.255.255.255","dPkts":6,"output":0,"dst_mask":0,"srcaddr":"172.30.3.5"},"header":{"Sequence
> Number":75571,"RouterIP":"172.29.1.3","UNIX
> Seconds":1323201132,"Source ID":0,"System
> Uptime":607562604},"version":9}' |
> '1323201132,0.0.0.0,0000000011','{"body":{"src_as":0,"srcport":0,"dstport":148,"nexthop":"0.0.0.0","First":607540516,"prot":2,"src_mask":0,"tos":-64,"input":2,"Last":607540516,"dOctets":32,"tcp_flags":16,"dst_as":0,"dstaddr":"224.0.0.1","dPkts":1,"output":0,"dst_mask":0,"srcaddr":"0.0.0.0"},"header":{"Sequence
> Number":75571,"RouterIP":"172.29.1.3","UNIX
> Seconds":1323201132,"Source ID":0,"System
> Uptime":607562604},"version":9}' | 'KEY','172.29.1.3,10311323198000'
>
> This is not an issue when we do not do reversed queries:
>
> cqlsh> SELECT FIRST 1 * FROM netflow_raw;
> '172.29.1.3,10311323198000' |
> '1323201033,172.30.3.2,0000000002','{"body":{"src_as":0,"srcport":0,"dstport":148,"nexthop":"0.0.0.0","First":607445536,"prot":2,"src_mask":24,"tos":-64,"input":9721,"Last":607445536,"dOctets":32,"tcp_flags":16,"dst_as":0,"dstaddr":"224.0.0.251","dPkts":1,"output":0,"dst_mask":0,"srcaddr":"172.30.3.2"},"header":{"Sequence
> Number":75564,"RouterIP":"172.29.1.3","UNIX
> Seconds":1323201033,"Source ID":0,"System
> Uptime":607463584},"version":9}'
>
> cqlsh> SELECT FIRST 2 * FROM netflow_raw;
> '172.29.1.3,10311323198000' |
> '1323201033,172.30.3.2,0000000002','{"body":{"src_as":0,"srcport":0,"dstport":148,"nexthop":"0.0.0.0","First":607445536,"prot":2,"src_mask":24,"tos":-64,"input":9721,"Last":607445536,"dOctets":32,"tcp_flags":16,"dst_as":0,"dstaddr":"224.0.0.251","dPkts":1,"output":0,"dst_mask":0,"srcaddr":"172.30.3.2"},"header":{"Sequence
> Number":75564,"RouterIP":"172.29.1.3","UNIX
> Seconds":1323201033,"Source ID":0,"System
> Uptime":607463584},"version":9}' |
> '1323201033,172.30.3.3,0000000001','{"body":{"src_as":0,"srcport":0,"dstport":148,"nexthop":"0.0.0.0","First":607445000,"prot":2,"src_mask":24,"tos":-64,"input":9721,"Last":607445000,"dOctets":32,"tcp_flags":16,"dst_as":0,"dstaddr":"224.0.0.251","dPkts":1,"output":0,"dst_mask":0,"srcaddr":"172.30.3.3"},"header":{"Sequence
> Number":75564,"RouterIP":"172.29.1.3","UNIX
> Seconds":1323201033,"Source ID":0,"System
> Uptime":607463584},"version":9}'
>
>
> I am not using cql for anything other than debugging purposes so I do
> not care when this bug is fixed, I just wanted to make people aware of
> it.



-- 
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of DataStax, the source for professional Cassandra support
http://www.datastax.com

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