[ https://issues.apache.org/jira/browse/MAPREDUCE-6714?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Akira AJISAKA updated MAPREDUCE-6714: ------------------------------------- Assignee: Daniel Templeton > Refactor UncompressedSplitLineReader.fillBuffer() > ------------------------------------------------- > > Key: MAPREDUCE-6714 > URL: https://issues.apache.org/jira/browse/MAPREDUCE-6714 > Project: Hadoop Map/Reduce > Issue Type: Improvement > Affects Versions: 2.8.0 > Reporter: Daniel Templeton > Assignee: Daniel Templeton > Attachments: MAPREDUCE-6714.001.patch > > > MAPREDUCE-6635 made this change: > {code} > - maxBytesToRead = Math.min(maxBytesToRead, > - (int)(splitLength - totalBytesRead)); > + long leftBytesForSplit = splitLength - totalBytesRead; > + // check if leftBytesForSplit exceed Integer.MAX_VALUE > + if (leftBytesForSplit <= Integer.MAX_VALUE) { > + maxBytesToRead = Math.min(maxBytesToRead, (int)leftBytesForSplit); > + } > {code} > The result is one more comparison than necessary and code that's a little > convoluted. The code can be simplified as: > {code} > long leftBytesForSplit = splitLength - totalBytesRead; > if (leftBytesForSplit < maxBytesToRead) { > maxBytesToRead = (int)leftBytesForSplit; > } > {code} > The comparison will auto promote {{maxBytesToRead}}, making it safe. -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: mapreduce-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: mapreduce-issues-h...@hadoop.apache.org