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https://issues.apache.org/jira/browse/HBASE-12023?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14140889#comment-14140889
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Vladimir Rodionov commented on HBASE-12023:
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[~lhofhansl]:
{quote}
What about my comment about not being able to guarantee that the lists passed
around are not guaranteed to be random accessible?
Not a problem, because they just happen to be (in Mutation they are ArrayLists)?
{quote}
Not sure I am following you here, Lars. List is random accessible, by default (
get(int index) API). As you mentioned already, in mutations we use ArrayList -
not LinkedList. LinkedLIst is not efficient, but (hopefully) will never be used
in HBase on a critical read/write paths.
> HRegion.applyFamilyMapToMemstore creates too many iterator objects...
> ---------------------------------------------------------------------
>
> Key: HBASE-12023
> URL: https://issues.apache.org/jira/browse/HBASE-12023
> Project: HBase
> Issue Type: Bug
> Affects Versions: 0.98.5, 0.94.23
> Reporter: Vladimir Rodionov
> Assignee: Vladimir Rodionov
> Priority: Minor
> Fix For: 0.94.24
>
> Attachments: HBASE-12023-0.94.patch, HBASE-12023.patch,
> applyFamilyMapToMemstore (1).tiff
>
>
> for ... loop (creates iterator) inside another for loop. Produces a lot of
> garbage. See attached picture.
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