[GitHub] cassandra pull request: Update lib/snappy-java-1.0.5.jar with snap...

[iheanyi]

Github user iheanyi closed the pull request at:

https://github.com/apache/cassandra/pull/37


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Re: Missing rows while scanning table using java driver

[Priyanka Gugale]

I am using query of the form: select * from %t where token(%p) > %s limit
%l;

where t=tablename, %p=primary key, %s=token value of primary key and l=limit

-Priyanka

On Mon, Feb 1, 2016 at 6:19 PM, Priyanka Gugale  wrote:

> Hi,
>
> I am using Cassandra 2.2.0 and cassandra driver 2.1.8. I am trying to scan
> a table as per suggestions given here
> ,
>  On running the code to fetch records from table, it fetches different
> number of records on each run. Some times it reads all records from table,
>  and some times some records are missing. As I have observed there is no
> fixed pattern for missing records.
>
> I have tried to set consistency level to ALL while running select query
> still I couldn't fetch all records. Is there any known issue? Or am I
> suppose to do anything more than running simple "select" statement.
>
> Code snippet to fetch data:
>
>  SimpleStatement stmt = new SimpleStatement(query);
>  stmt.setConsistencyLevel(ConsistencyLevel.ALL);
>  ResultSet result = session.execute(stmt);
>  if (!result.isExhausted()) {
>for (Row row : result) {
>  process(row);
>}
>  }
>
> -Priyanka
>

Re: Missing rows while scanning table using java driver

[Priyanka Gugale]

Thanks Paulo and Ryan, I have moved my question to user mailing list.

-Priyanka

On Tue, Feb 2, 2016 at 6:31 PM, Ryan Svihla  wrote:

> Priyanka,
>
> This is a better question for the Cassandra user mailing list (cc’d above)
> which is where many experts in the use of Cassandra are subscribed, where
> as this list is more about improving or changing Cassandra itself.
>
> As to your issue, there can be many combined issues at once that are
> leading to this situation, can I suggest you respond on the user list with
> the following:
>
> - Keyspace (RF especially), data center and table configuration.
> - Any errors in the logs on the Cassandra nodes.
>
> Regards,
>
> Ryan Svihla
>
> > On Feb 2, 2016, at 4:58 AM, Priyanka Gugale  wrote:
> >
> > I am using query of the form: select * from %t where token(%p) > %s limit
> > %l;
> >
> > where t=tablename, %p=primary key, %s=token value of primary key and
> l=limit
> >
> > -Priyanka
> >
> > On Mon, Feb 1, 2016 at 6:19 PM, Priyanka Gugale 
> wrote:
> >
> >> Hi,
> >>
> >> I am using Cassandra 2.2.0 and cassandra driver 2.1.8. I am trying to
> scan
> >> a table as per suggestions given here
> >> <
> http://www.myhowto.org/bigdata/2013/11/04/scanning-the-entire-cassandra-column-family-with-cql/
> >,
> >> On running the code to fetch records from table, it fetches different
> >> number of records on each run. Some times it reads all records from
> table,
> >> and some times some records are missing. As I have observed there is no
> >> fixed pattern for missing records.
> >>
> >> I have tried to set consistency level to ALL while running select query
> >> still I couldn't fetch all records. Is there any known issue? Or am I
> >> suppose to do anything more than running simple "select" statement.
> >>
> >> Code snippet to fetch data:
> >>
> >> SimpleStatement stmt = new SimpleStatement(query);
> >> stmt.setConsistencyLevel(ConsistencyLevel.ALL);
> >> ResultSet result = session.execute(stmt);
> >> if (!result.isExhausted()) {
> >>   for (Row row : result) {
> >> process(row);
> >>   }
> >> }
> >>
> >> -Priyanka
> >>
>
>

Re: Missing rows while scanning table using java driver

[Paulo Motta]

This list (dev@cassandra.apache.org) is not the appropriate forum for user
or driver-related questions, but only for Cassandra internal development.
Please subscribe and ask the question in the appropriate list:
https://mail-archives.apache.org/mod_mbox/cassandra-user/ or
https://groups.google.com/a/lists.datastax.com/forum/#!forum/java-driver-user

Thanks,

2016-02-02 7:58 GMT-03:00 Priyanka Gugale :

> I am using query of the form: select * from %t where token(%p) > %s limit
> %l;
>
> where t=tablename, %p=primary key, %s=token value of primary key and
> l=limit
>
> -Priyanka
>
> On Mon, Feb 1, 2016 at 6:19 PM, Priyanka Gugale  wrote:
>
> > Hi,
> >
> > I am using Cassandra 2.2.0 and cassandra driver 2.1.8. I am trying to
> scan
> > a table as per suggestions given here
> > <
> http://www.myhowto.org/bigdata/2013/11/04/scanning-the-entire-cassandra-column-family-with-cql/
> >,
> >  On running the code to fetch records from table, it fetches different
> > number of records on each run. Some times it reads all records from
> table,
> >  and some times some records are missing. As I have observed there is no
> > fixed pattern for missing records.
> >
> > I have tried to set consistency level to ALL while running select query
> > still I couldn't fetch all records. Is there any known issue? Or am I
> > suppose to do anything more than running simple "select" statement.
> >
> > Code snippet to fetch data:
> >
> >  SimpleStatement stmt = new SimpleStatement(query);
> >  stmt.setConsistencyLevel(ConsistencyLevel.ALL);
> >  ResultSet result = session.execute(stmt);
> >  if (!result.isExhausted()) {
> >for (Row row : result) {
> >  process(row);
> >}
> >  }
> >
> > -Priyanka
> >
>