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https://issues.apache.org/jira/browse/HBASE-17151?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15706700#comment-15706700
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Vladimir Rodionov edited comment on HBASE-17151 at 11/29/16 10:11 PM:
----------------------------------------------------------------------
v2. Added new API call to HFile to create reader w/o cache configuration
instance.
{code}
/**
* Creates reader w/o cache being involved
* @param fs filesystem
* @param path Path to file to read
* @return an active Reader instance
* @throws IOException Will throw a CorruptHFileException
(DoNotRetryIOException subtype) if hfile is corrupt/invalid.
*/
public static Reader createReader(
FileSystem fs, Path path, Configuration conf) throws IOException {
FSDataInputStreamWrapper stream = new FSDataInputStreamWrapper(fs, path);
return pickReaderVersion(path, stream, fs.getFileStatus(path).getLen(),
null, stream.getHfs(), conf);
}
{code}
was (Author: vrodionov):
v2. Added new API call to HFile to create reader w/o cache configuration
instance.
> New API to create HFile.Reader without instantiating block cache
> -----------------------------------------------------------------
>
> Key: HBASE-17151
> URL: https://issues.apache.org/jira/browse/HBASE-17151
> Project: HBase
> Issue Type: New Feature
> Reporter: Vladimir Rodionov
> Assignee: Vladimir Rodionov
> Attachments: HBASE-17151-v1.patch, HBASE-17151-v2.patch
>
>
> Currently, to create HFile.Reader instance, the CacheConfig instance is
> required (which instantiates block cache). We need API for reading HFile w/o
> block cache being involved.
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