[HIVE-17064] GZipCodec doesn't handle zip files

• Type: Bug
• Status: Reopened
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 2.2.0
• Component/s: Compression

Environment

OSX 10.12.5
Native Libraries
Hadoop 2.8 (Hive 2.2.0)

• Assignee: Unassigned
• Reporter: Andi
• Created: 09/Jul/17 21:35
• Updated: 10/Jul/17 00:21

Description

Attempting to read a zip file using GZip Coded created by:
>echo "abcdef" | zip > /tmp/a.zip
fails, while the same gzip succeeds.

Code below is scala, run in spark-shell ( 2.1):

import org.apache.hadoop.io.compress.zlib._
org.apache.hadoop.io.compress.zlib.ZlibFactory.isNativeZlibLoaded(spark.sparkContext.hadoopConfiguration)

val in = new java.io.FileInputStream("/tmp/a.zip")
val gcode = new org.apache.hadoop.io.compress.GzipCodec
gcode.setConf(spark.sparkContext.hadoopConfiguration)

val giz = gcode.createInputStream(in)
val lr = new org.apache.hadoop.util.LineReader(giz)

val text = new org.apache.hadoop.io.Text
scala> lr.readLine(text)
java.io.IOException: incorrect header check
at org.apache.hadoop.io.compress.zlib.ZlibDecompressor.inflateBytesDirect(Native Method)
at org.apache.hadoop.io.compress.zlib.ZlibDecompressor.decompress(ZlibDecompressor.java:227)
at org.apache.hadoop.io.compress.DecompressorStream.decompress(DecompressorStream.java:91)
at org.apache.hadoop.io.compress.DecompressorStream.read(DecompressorStream.java:85)
at java.io.InputStream.read(InputStream.java:101)
at org.apache.hadoop.util.LineReader.readDefaultLine(LineReader.java:211)
at org.apache.hadoop.util.LineReader.readLine(LineReader.java:174)
at org.apache.hadoop.util.LineReader.readLine(LineReader.java:365)
... 43 elided

Repeating the same with file created by:
echo "abcdef" | gzip > /tmp/a.gz
Works as expected