[jira] [Commented] (CASSANDRA-4871) get_paged_slice does not obey SlicePredicate
[ https://issues.apache.org/jira/browse/CASSANDRA-4871?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13725382#comment-13725382 ] Jonathan Ellis commented on CASSANDRA-4871: --- Right. Basically, wide-row mode and get_paged_slice are hacks that are obsolete now that we have CQL and CqlPagingRecordReader. See http://www.datastax.com/dev/blog/does-cql-support-dynamic-columns-wide-rows for background. > get_paged_slice does not obey SlicePredicate > > > Key: CASSANDRA-4871 > URL: https://issues.apache.org/jira/browse/CASSANDRA-4871 > Project: Cassandra > Issue Type: New Feature > Components: API, Hadoop >Affects Versions: 1.1.0 >Reporter: Scott Fines >Priority: Minor > Attachments: CASSANDRA-4816.patch > > > When experimenting with WideRow support, I noticed that it is not possible to > specify a bounding SlicePredicate. This means that, no matter what you may > wish, the entire Column Family will be used during a get_paged_slice call. > This is unfortunate, if (for example) you are attempting to do MapReduce over > a subset of your column range. > get_paged_slice should support a SlicePredicate, which will bound the column > range over which data is returned. It seems like this SlicePredicate should > be optional, so that existing code is not broken--when the SlicePredicate is > not specified, have it default to going over the entire column range. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira
[jira] [Commented] (CASSANDRA-4871) get_paged_slice does not obey SlicePredicate
[ https://issues.apache.org/jira/browse/CASSANDRA-4871?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13725335#comment-13725335 ] Adam Masters commented on CASSANDRA-4871: - Looking at the word_count example in github, its interesting to note the comment which has been added against the wide-row functionality: "this will cause the predicate to be ignored in favor of scanning everything as a wide row". This suggests that ignoring the SlicePredicate for wide rows is by design. In which case, how does one limit the columns when using wide rows? > get_paged_slice does not obey SlicePredicate > > > Key: CASSANDRA-4871 > URL: https://issues.apache.org/jira/browse/CASSANDRA-4871 > Project: Cassandra > Issue Type: New Feature > Components: API, Hadoop >Affects Versions: 1.1.0 >Reporter: Scott Fines >Priority: Minor > Attachments: CASSANDRA-4816.patch > > > When experimenting with WideRow support, I noticed that it is not possible to > specify a bounding SlicePredicate. This means that, no matter what you may > wish, the entire Column Family will be used during a get_paged_slice call. > This is unfortunate, if (for example) you are attempting to do MapReduce over > a subset of your column range. > get_paged_slice should support a SlicePredicate, which will bound the column > range over which data is returned. It seems like this SlicePredicate should > be optional, so that existing code is not broken--when the SlicePredicate is > not specified, have it default to going over the entire column range. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira
[jira] [Commented] (CASSANDRA-4871) get_paged_slice does not obey SlicePredicate
[ https://issues.apache.org/jira/browse/CASSANDRA-4871?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13725241#comment-13725241 ] Adam Masters commented on CASSANDRA-4871: - I'm finding this issue is still prevalent in 1.2.6, and the attached patch (still) doesnt apply to trunk. > get_paged_slice does not obey SlicePredicate > > > Key: CASSANDRA-4871 > URL: https://issues.apache.org/jira/browse/CASSANDRA-4871 > Project: Cassandra > Issue Type: New Feature > Components: API, Hadoop >Affects Versions: 1.1.0 >Reporter: Scott Fines >Priority: Minor > Attachments: CASSANDRA-4816.patch > > > When experimenting with WideRow support, I noticed that it is not possible to > specify a bounding SlicePredicate. This means that, no matter what you may > wish, the entire Column Family will be used during a get_paged_slice call. > This is unfortunate, if (for example) you are attempting to do MapReduce over > a subset of your column range. > get_paged_slice should support a SlicePredicate, which will bound the column > range over which data is returned. It seems like this SlicePredicate should > be optional, so that existing code is not broken--when the SlicePredicate is > not specified, have it default to going over the entire column range. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira
[jira] [Commented] (CASSANDRA-4871) get_paged_slice does not obey SlicePredicate
[ https://issues.apache.org/jira/browse/CASSANDRA-4871?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13542090#comment-13542090 ] Piotr Kołaczkowski commented on CASSANDRA-4871: --- And why the patch file has a different number than the ticket? Is it right patch file? > get_paged_slice does not obey SlicePredicate > > > Key: CASSANDRA-4871 > URL: https://issues.apache.org/jira/browse/CASSANDRA-4871 > Project: Cassandra > Issue Type: New Feature > Components: API, Hadoop >Affects Versions: 1.1.0 >Reporter: Scott Fines >Priority: Minor > Fix For: 2.0 > > Attachments: CASSANDRA-4816.patch > > > When experimenting with WideRow support, I noticed that it is not possible to > specify a bounding SlicePredicate. This means that, no matter what you may > wish, the entire Column Family will be used during a get_paged_slice call. > This is unfortunate, if (for example) you are attempting to do MapReduce over > a subset of your column range. > get_paged_slice should support a SlicePredicate, which will bound the column > range over which data is returned. It seems like this SlicePredicate should > be optional, so that existing code is not broken--when the SlicePredicate is > not specified, have it default to going over the entire column range. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira
[jira] [Commented] (CASSANDRA-4871) get_paged_slice does not obey SlicePredicate
[ https://issues.apache.org/jira/browse/CASSANDRA-4871?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13542087#comment-13542087 ] Piotr Kołaczkowski commented on CASSANDRA-4871: --- error: patch failed: src/java/org/apache/cassandra/hadoop/ColumnFamilyRecordReader.java:160 error: src/java/org/apache/cassandra/hadoop/ColumnFamilyRecordReader.java: patch does not apply Can you rebase the patch, please? > get_paged_slice does not obey SlicePredicate > > > Key: CASSANDRA-4871 > URL: https://issues.apache.org/jira/browse/CASSANDRA-4871 > Project: Cassandra > Issue Type: New Feature > Components: API, Hadoop >Affects Versions: 1.1.0 >Reporter: Scott Fines >Priority: Minor > Fix For: 2.0 > > Attachments: CASSANDRA-4816.patch > > > When experimenting with WideRow support, I noticed that it is not possible to > specify a bounding SlicePredicate. This means that, no matter what you may > wish, the entire Column Family will be used during a get_paged_slice call. > This is unfortunate, if (for example) you are attempting to do MapReduce over > a subset of your column range. > get_paged_slice should support a SlicePredicate, which will bound the column > range over which data is returned. It seems like this SlicePredicate should > be optional, so that existing code is not broken--when the SlicePredicate is > not specified, have it default to going over the entire column range. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira
[jira] [Commented] (CASSANDRA-4871) get_paged_slice does not obey SlicePredicate
[ https://issues.apache.org/jira/browse/CASSANDRA-4871?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13542086#comment-13542086 ] Piotr Kołaczkowski commented on CASSANDRA-4871: --- Which branch is this patch for? I can't apply it to neither to 1.1 nor 1.2 nor trunk. > get_paged_slice does not obey SlicePredicate > > > Key: CASSANDRA-4871 > URL: https://issues.apache.org/jira/browse/CASSANDRA-4871 > Project: Cassandra > Issue Type: New Feature > Components: API, Hadoop >Affects Versions: 1.1.0 >Reporter: Scott Fines >Priority: Minor > Fix For: 2.0 > > Attachments: CASSANDRA-4816.patch > > > When experimenting with WideRow support, I noticed that it is not possible to > specify a bounding SlicePredicate. This means that, no matter what you may > wish, the entire Column Family will be used during a get_paged_slice call. > This is unfortunate, if (for example) you are attempting to do MapReduce over > a subset of your column range. > get_paged_slice should support a SlicePredicate, which will bound the column > range over which data is returned. It seems like this SlicePredicate should > be optional, so that existing code is not broken--when the SlicePredicate is > not specified, have it default to going over the entire column range. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira
