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https://issues.apache.org/jira/browse/HADOOP-5281?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ben Maurer updated HADOOP-5281:
-------------------------------
Attachment: GZt.java
Sorry, the file got munged.. here's a full version of the test
> GzipCodec fails second time it is used in a process
> ---------------------------------------------------
>
> Key: HADOOP-5281
> URL: https://issues.apache.org/jira/browse/HADOOP-5281
> Project: Hadoop Core
> Issue Type: Bug
> Affects Versions: 0.19.0
> Environment: 0.19.0 / Linux / amd64
> Reporter: Ben Maurer
> Priority: Blocker
> Attachments: GZt.java
>
>
> The following code raises:
> 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:221)
> at
> org.apache.hadoop.io.compress.DecompressorStream.decompress(DecompressorStream.java:80)
> at
> org.apache.hadoop.io.compress.DecompressorStream.read(DecompressorStream.java:74)
> at
> org.apache.hadoop.io.compress.DecompressorStream.read(DecompressorStream.java:62)
> at java.io.DataInputStream.readByte(DataInputStream.java:248)
> at org.apache.hadoop.io.WritableUtils.readVLong(WritableUtils.java:325)
> at org.apache.hadoop.io.WritableUtils.readVInt(WritableUtils.java:346)
> at org.apache.hadoop.io.SequenceFile$Reader.next(SequenceFile.java:1853)
> at org.apache.hadoop.io.SequenceFile$Reader.next(SequenceFile.java:1876)
> at org.apache.hadoop.io.MapFile$Reader.readIndex(MapFile.java:319)
> at org.apache.hadoop.io.MapFile$Reader.seekInternal(MapFile.java:435)
> at org.apache.hadoop.io.MapFile$Reader.seekInternal(MapFile.java:417)
> at org.apache.hadoop.io.MapFile$Reader.seek(MapFile.java:404)
> at org.apache.hadoop.io.MapFile$Reader.get(MapFile.java:523)
> {quote}
> import java.io.IOException;
> import org.apache.hadoop.conf.Configuration;
> import org.apache.hadoop.conf.Configured;
> import org.apache.hadoop.fs.FileSystem;
> import org.apache.hadoop.fs.Path;
> import org.apache.hadoop.io.IntWritable;
> import org.apache.hadoop.io.MapFile;
> import org.apache.hadoop.io.SequenceFile.CompressionType;
> import org.apache.hadoop.io.compress.GzipCodec;
> import org.apache.hadoop.util.Tool;
> import org.apache.hadoop.util.ToolRunner;
> public class GZt extends Configured implements Tool {
> private FileSystem fileSystem;
> MapFile.Writer newMap(Path p) throws IOException {
> return new MapFile.Writer(getConf(), fileSystem, p.toString(),
> IntWritable.class, IntWritable.class,
> CompressionType.BLOCK,
> new GzipCodec(), null);
> }
> @Override
> public int run(String[] args) throws Exception {
> Path p = new Path(args[0]);
> fileSystem = FileSystem.get(getConf());
> fileSystem.mkdirs(p);
> for (int i = 0; i < 2; i++) {
> MapFile.Writer w = newMap(new Path(p, "b" + i));
> for (int j = 0; j < 100; j++) {
> w.append(new IntWritable(j), new
> IntWritable(j));
> }
> w.close();
> }
> MapFile.Reader rdr = new MapFile.Reader(fileSystem, new Path(p,
> "b1")
> .toString(), getConf());
> rdr.get(new IntWritable(1), new IntWritable());
> return 0;
> }
> public static void main(String[] args) throws Exception {
> int res = ToolRunner.run(new Configuration(), new GZt(), args);
> System.exit(res);
> }
> }
> {quote}
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