[HADOOP-7940] method clear() in org.apache.hadoop.io.Text does not work

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.20.205.0
• Fix Version/s: 2.0.0-alpha
• Component/s: io
• Labels: patch

Environment

Ubuntu, hadoop cloudera CDH3U2, Oracle SUN JDK 6U30

• Assignee: Csaba Miklos
• Reporter: Aaron,
• Created: 24/Dec/11 14:50
• Updated: 23/May/12 20:15
• Resolved: 29/Feb/12 11:08

Description

LineReader reader = new LineReader(in, 4096);
...

Text text = new Text();
while((reader.readLine(text)) > 0) {
...
text.clear();
}
}

Even the clear() method is called each time, some bytes are still not filled as zero.
So, when reader.readLine(text) is called in a loop, some bytes are dirty which was from last call.

Issue Links

• is superceded by: HADOOP-8323 Revert HADOOP-7940 and improve javadocs and test for Text.clear()