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https://issues.apache.org/jira/browse/CASSANDRA-3885?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13292618#comment-13292618
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Vijay commented on CASSANDRA-3885:
----------------------------------
SliceQueryFilter.serializer needs to deal with Multiple ColumnSlice's or
at-least we have to create a ticket to followup.
I am confused with the patch a bit... Comments on IndexedSliceReader says
{quote}
forward: [a,b],[d,e],[g,h] reverse: [h,g],[e,d],[b,a].
{quote}
but why do we need to do this?
{code}
if (reversed && readBackwards)
currentSlice--;
else
currentSlice++;
{code}
In IndexedSliceReader itself is a iterator and within which there is Simple and
IndexedFetcher which is also kind of a iterator ... it might be better to make
IndexedSliceReader as abstract class and add functionality into classes.
> Support multiple ranges in SliceQueryFilter
> -------------------------------------------
>
> Key: CASSANDRA-3885
> URL: https://issues.apache.org/jira/browse/CASSANDRA-3885
> Project: Cassandra
> Issue Type: Sub-task
> Components: Core
> Reporter: Jonathan Ellis
> Assignee: David Alves
> Fix For: 1.2
>
> Attachments: CASSANDRA-3885.patch, CASSANDRA-3885.patch,
> CASSANDRA-3885.patch, CASSANDRA-3885.patch, CASSANDRA-3885.patch
>
>
> This is logically a subtask of CASSANDRA-2710, but Jira doesn't allow
> sub-sub-tasks.
> We need to support multiple ranges in a SliceQueryFilter, and we want
> querying them to be efficient, i.e., one pass through the row to get all of
> the ranges, rather than one pass per range.
> Supercolumns are irrelevant since the goal is to replace them anyway. Ignore
> supercolumn-related code or rip it out, whichever is easier.
> This is ONLY dealing with the storage engine part, not the StorageProxy and
> Command intra-node messages or the Thrift or CQL client APIs. Thus, a unit
> test should be added to ColumnFamilyStoreTest to demonstrate that it works.
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