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https://issues.apache.org/jira/browse/HBASE-4932?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13163175#comment-13163175
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stack commented on HBASE-4932:
------------------------------
I was going to say this is probably really expensive but its just cloning of in
memory Arrays and Properties so probably not too bad:
{code}
- public static final WriterFactory getWriterFactory(Configuration conf) {
- return HFile.getWriterFactory(conf, new CacheConfig(conf));
+ public static final WriterFactory getWriterFactoryNoCache(Configuration
+ conf) {
+ Configuration tempConf = new Configuration(conf);
+ tempConf.setFloat(CacheConfig.HFILE_BLOCK_CACHE_SIZE_KEY, 0.0f);
+ return HFile.getWriterFactory(conf, new CacheConfig(tempConf));
{code}
+1 on patch.
> Block cache can be mistakenly instantiated by tools
> ---------------------------------------------------
>
> Key: HBASE-4932
> URL: https://issues.apache.org/jira/browse/HBASE-4932
> Project: HBase
> Issue Type: Bug
> Reporter: Prakash Khemani
> Assignee: Prakash Khemani
> Fix For: 0.94.0
>
> Attachments: HBASE-4932.patch
>
>
> Map Reduce tasks that create a writer to write HFiles inadvertently end up
> creating block cache.
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