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https://issues.apache.org/jira/browse/ACCUMULO-4744?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated ACCUMULO-4744:
-------------------------------------
Labels: pull-request-available (was: )
> Using RFile API with cache and multiple files hides data
> --------------------------------------------------------
>
> Key: ACCUMULO-4744
> URL: https://issues.apache.org/jira/browse/ACCUMULO-4744
> Project: Accumulo
> Issue Type: Bug
> Affects Versions: 1.8.0, 1.8.1
> Reporter: Keith Turner
> Priority: Critical
> Labels: pull-request-available
> Fix For: 1.8.2
>
>
> Noticed this bug in source code while working on ACCUMULO-4641. When using
> the RFile API introduced in 1.8 to read from multiple files with cache
> enabled, not all data may be seen. This happens because internally the code
> gives all input sources the same cache id. Therefore index and data blocks
> from multiple files collide in the cache.
> This bug does not happen when reading data through tserver, only the RFile
> API.
> {code:java}
> Scanner scanner =
> RFile.newScanner()
> .from(file1, file2, file3) //multiple input files
> .withFileSystem(localFs)
> .withIndexCache(1000000) //enabled cache
> .withDataCache(10000000) //enabled cache
> .build();
> {code}
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