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Posted to commits@cassandra.apache.org by "Jay Zhuang (JIRA)" <ji...@apache.org> on 2016/12/22 22:57:58 UTC
[jira] [Assigned] (CASSANDRA-12453) AutoSavingCache does not store
required keys making RowCacheTests Flaky
[ https://issues.apache.org/jira/browse/CASSANDRA-12453?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jay Zhuang reassigned CASSANDRA-12453:
--------------------------------------
Assignee: Jay Zhuang
> AutoSavingCache does not store required keys making RowCacheTests Flaky
> -----------------------------------------------------------------------
>
> Key: CASSANDRA-12453
> URL: https://issues.apache.org/jira/browse/CASSANDRA-12453
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Reporter: sankalp kohli
> Assignee: Jay Zhuang
> Priority: Minor
>
> RowCacheTests were flaky and while investigating, I found that it does not store all the keys to disk.
> The reason is that we use OHCache and call hotKeyIterator on it. This is not guaranteed to return the number of keys we want. Here is the documentation from OHCache
> /**
> * Builds an iterator over the N most recently used keys returning deserialized objects.
> * You must call {@code close()} on the returned iterator.
> * <p>
> * Note: During a rehash, the implementation might return keys twice or not at all.
> * </p>
> */
> CloseableIterator<K> hotKeyIterator(int n);
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