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https://issues.apache.org/jira/browse/CASSANDRA-821?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12855193#action_12855193
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Jonathan Ellis edited comment on CASSANDRA-821 at 4/8/10 10:49 PM:
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Okay, here's a cleanup in both patch-against-v1 and one-big-change formats.
Vs v1 the high-level overview is, r/m goToDataStart, IKeyColumnIterator, and
ISSTableColumnIterator, rename SSTableColumnIterator ->
SSTableIdentityIterator, rename ColumnIterator -> IColumnIterator, and clean up
RowIteratorFactory & related code.
delete mode 100644 src/java/org/apache/cassandra/db/IRowIterator.java
create mode 100644 src/java/org/apache/cassandra/db/RowIterator.java
delete mode 100644 src/java/org/apache/cassandra/db/RowIteratorImpl.java
rename src/java/org/apache/cassandra/db/filter/{ColumnIterator.java =>
IColumnIterator.java} (87%)
delete mode 100644 src/java/org/apache/cassandra/io/IKeyColumnIterator.java
delete mode 100644
src/java/org/apache/cassandra/io/sstable/ISSTableColumnIterator.java
rename src/java/org/apache/cassandra/io/sstable/{SSTableColumnIterator.java =>
SSTableIdentityIterator.java} (85%)
was (Author: jbellis):
Okay, here's a cleanup in both patch-against-v1 and one-big-change formats.
Vs v1 the high-level overview is, r/m goToDataStart, IKeyColumnIterator, and
ISSTableColumnIterator, rename SSTableColumnIterator ->
SSTableIdentityIterator, and clean up RowIteratorFactory & related code.
delete mode 100644 src/java/org/apache/cassandra/db/IRowIterator.java
create mode 100644 src/java/org/apache/cassandra/db/RowIterator.java
delete mode 100644 src/java/org/apache/cassandra/db/RowIteratorImpl.java
rename src/java/org/apache/cassandra/db/filter/{ColumnIterator.java =>
IColumnIterator.java} (87%)
delete mode 100644 src/java/org/apache/cassandra/io/IKeyColumnIterator.java
delete mode 100644
src/java/org/apache/cassandra/io/sstable/ISSTableColumnIterator.java
rename src/java/org/apache/cassandra/io/sstable/{SSTableColumnIterator.java =>
SSTableIdentityIterator.java} (85%)
> get_range_slice performance
> ---------------------------
>
> Key: CASSANDRA-821
> URL: https://issues.apache.org/jira/browse/CASSANDRA-821
> Project: Cassandra
> Issue Type: Improvement
> Affects Versions: 0.6
> Reporter: Brandon Williams
> Assignee: Johan Oskarsson
> Priority: Minor
> Fix For: 0.7
>
> Attachments: 821-v2-diff.txt, 821-v2.txt, CASSANDRA-821.patch,
> CASSANDRA-821.patch, CASSANDRA-821.patch, CASSANDRA-821.patch
>
>
> get_range_slice performance isn't that great. CASSANDRA-799 helped in the
> case when the memtable isn't flushed, but overall the operations per second
> and latency is still pretty bad. On a quad core node with a trivial amount
> of data I see around 130-150 ops per second with stress.py set to slice 100
> keys at a time, and latency is 300-500ms.
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