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https://issues.apache.org/jira/browse/HBASE-4241?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13090495#comment-13090495
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Ted Yu commented on HBASE-4241:
-------------------------------
Year should be 2011.
{code}
+ * Copyright 2009 The Apache Software Foundation
{code}
I think a better description:
{code}
+ * Utility scanner that can wrap a collection (anything iterable)and pretend to
+ * be a KeyValueScanner.
{code}
would be:
{code}
+ * Utility scanner that wraps a collection (anything iterable) and serves
+ * as a KeyValueScanner.
{code}
Please run through unit tests.
If they pass, please use reviewboard for further comments.
Good work.
> Optimize flushing of the Store cache for max versions and (new) min versions
> ----------------------------------------------------------------------------
>
> Key: HBASE-4241
> URL: https://issues.apache.org/jira/browse/HBASE-4241
> Project: HBase
> Issue Type: Bug
> Components: regionserver
> Affects Versions: 0.92.0
> Reporter: Lars Hofhansl
> Assignee: Lars Hofhansl
> Attachments: 4241-v2.txt, 4241.txt
>
>
> As discussed with with Jon, there is room for improvement in how the memstore
> is flushed to disk.
> Currently only expired KVs are pruned before flushing, but we can also prune
> versions if we find at least maxVersions versions in the memstore.
> The same holds for the new minversion feature: If we find at least minVersion
> versions in the store we can remove all further versions that are expired.
> Generally we should use the same mechanism here that is used for Compaction.
> I.e. StoreScanner. We only need to add a scanner to Memstore that can scan
> along the current snapshot.
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