[ https://issues.apache.org/jira/browse/HBASE-7970?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Ted Yu updated HBASE-7970: -------------------------- Summary: Improve file descriptor usage: currently, there are two file descriptors per storefile (was: Improve file descriptor usage: Currently, there are two fds per one storefile) > Improve file descriptor usage: currently, there are two file descriptors per > storefile > -------------------------------------------------------------------------------------- > > Key: HBASE-7970 > URL: https://issues.apache.org/jira/browse/HBASE-7970 > Project: HBase > Issue Type: Sub-task > Reporter: Himanshu Vashishtha > > This is because there are two open calls in the HFile: one with checksum and > another for without checksum support in v2: > see the method in HFile:createReaderWithEncoding() > {code} > FSDataInputStream fsdis = fs.open(path); > FSDataInputStream fsdisNoFsChecksum = fsdis; > // If the fs is not an instance of HFileSystem, then create an > // instance of HFileSystem that wraps over the specified fs. > // In this case, we will not be able to avoid checksumming inside > // the filesystem. > if (!(fs instanceof HFileSystem)) { > hfs = new HFileSystem(fs); > } else { > hfs = (HFileSystem)fs; > // open a stream to read data without checksum verification in > // the filesystem > fsdisNoFsChecksum = hfs.getNoChecksumFs().open(path); > } > {code} -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira