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https://issues.apache.org/jira/browse/HBASE-16013?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15343990#comment-15343990
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Ted Yu commented on HBASE-16013:
--------------------------------
{code}
354 // TODO : Handle backward scanner
355 public static class MemStoreIterator implements Iterator<Cell> {
{code}
The class can be of package scope, right ?
When would the backward scan be supported ?
{code}
372 } catch (IOException e) {
373 // throw error out? ideally no error should be thrown here
{code}
I think the error should be thrown out.
> In-memory Compaction process can be improved for a default case
> ---------------------------------------------------------------
>
> Key: HBASE-16013
> URL: https://issues.apache.org/jira/browse/HBASE-16013
> Project: HBase
> Issue Type: Sub-task
> Affects Versions: 2.0.0
> Reporter: ramkrishna.s.vasudevan
> Assignee: ramkrishna.s.vasudevan
> Fix For: 2.0.0
>
> Attachments: HBASE-16013.patch, HBASE-16013_1.patch
>
>
> There is an ongoing discussion on how to handle the default case (no
> duplicates/deletes) and how to use the new CompactingMemstore in such a case.
> One improvement is to avoid the StoreScanner and go with a simple
> MemstoreScanner. This avoids lot of comparisons that the StoreScanner does.
> Just raising this sub-task as part of some analysis going on.
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