[HBASE-14307] Incorrect use of positional read api in HFileBlock

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.2.0, 0.98.15, 1.0.3, 1.1.3, 2.0.0
• Component/s: io
• Hadoop Flags: Reviewed
• Assignee: Chris Nauroth
• Reporter: Shradha Revankar
• Created: 25/Aug/15 17:22
• Updated: 27/Jan/16 15:28
• Resolved: 11/Sep/15 10:34

Description

Considering that read() is not guaranteed to read all bytes,
I'm interested to understand this particular piece of code and why is partial read treated as an error :

https://github.com/apache/hbase/blob/master/hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/HFileBlock.java#L1446-L1450

Particularly, if hbase were to use a different filesystem, say WebhdfsFileSystem, this would not work, please also see https://issues.apache.org/jira/browse/HDFS-8943 for discussion around this.

Issue Links

• is related to: HDFS-8943 Read apis in ByteRangeInputStream does not read all the bytes specified when chunked transfer-encoding is used in the server