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Posted to common-issues@hadoop.apache.org by "binde (JIRA)" <ji...@apache.org> on 2016/06/17 08:24:05 UTC
[jira] [Issue Comment Deleted] (HADOOP-13192)
org.apache.hadoop.util.LineReader match recordDelimiter has a bug
[ https://issues.apache.org/jira/browse/HADOOP-13192?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
binde updated HADOOP-13192:
---------------------------
Comment: was deleted
(was: ok)
> org.apache.hadoop.util.LineReader match recordDelimiter has a bug
> ------------------------------------------------------------------
>
> Key: HADOOP-13192
> URL: https://issues.apache.org/jira/browse/HADOOP-13192
> Project: Hadoop Common
> Issue Type: Bug
> Components: util
> Affects Versions: 2.6.2
> Reporter: binde
> Assignee: binde
> Attachments: 0001-HADOOP-13192-org.apache.hadoop.util.LineReader-match.patch, 0002-fix-bug-hadoop-1392-add-test-case-for-LineReader.patch
>
> Original Estimate: 5m
> Remaining Estimate: 5m
>
> org.apache.hadoop.util.LineReader.readCustomLine() has a bug,
> when line is aaaabccc, recordDelimiter is aaab, the result should be a,ccc,
> show the code on line 310:
> for (; bufferPosn < bufferLength; ++bufferPosn) {
> if (buffer[bufferPosn] == recordDelimiterBytes[delPosn]) {
> delPosn++;
> if (delPosn >= recordDelimiterBytes.length) {
> bufferPosn++;
> break;
> }
> } else if (delPosn != 0) {
> bufferPosn--;
> delPosn = 0;
> }
> }
> shoud be :
> for (; bufferPosn < bufferLength; ++bufferPosn) {
> if (buffer[bufferPosn] == recordDelimiterBytes[delPosn]) {
> delPosn++;
> if (delPosn >= recordDelimiterBytes.length) {
> bufferPosn++;
> break;
> }
> } else if (delPosn != 0) {
> // ------------- change here ------------- start ----
> bufferPosn -= delPosn;
> // ------------- change here ------------- end ----
>
> delPosn = 0;
> }
> }
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