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Merge -r 1238840:1238841 from trunk to branch-0.23. Fixes: HADOOP-8006 

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.23@1238845 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Robert Joseph Evans 2012-01-31 22:47:34 +00:00
parent b8fbf25ace
commit 714a38a619
2 changed files with 31 additions and 4 deletions
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3
hadoop-common-project/hadoop-common/CHANGES.txt
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@ -90,6 +90,9 @@ Release 0.23.1 - Unreleased
OPTIMIZATIONS
BUG FIXES
HADOOP-8006 TestFSInputChecker is failing in trunk.
(Daryn Sharp via bobby)
HADOOP-7998. CheckFileSystem does not correctly honor setVerifyChecksum
(Daryn Sharp via bobby)

32
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/ChecksumFileSystem.java
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@ -119,7 +119,6 @@ private static class ChecksumFSInputChecker extends FSInputChecker {
private static final int HEADER_LENGTH = 8;
private int bytesPerSum = 1;
private long fileLen = -1L;
public ChecksumFSInputChecker(ChecksumFileSystem fs, Path file)
throws IOException {
@ -244,6 +243,24 @@ protected int readChunk(long pos, byte[] buf, int offset, int len,
}
return nread;
}
}
private static class FSDataBoundedInputStream extends FSDataInputStream {
private FileSystem fs;
private Path file;
private long fileLen = -1L;
FSDataBoundedInputStream(FileSystem fs, Path file, InputStream in)
throws IOException {
super(in);
this.fs = fs;
this.file = file;
}
@Override
public boolean markSupported() {
return false;
}
/* Return the file length */
private long getFileLength() throws IOException {
@ -304,9 +321,16 @@ public synchronized void seek(long pos) throws IOException {
*/
@Override
public FSDataInputStream open(Path f, int bufferSize) throws IOException {
return verifyChecksum
? new FSDataInputStream(new ChecksumFSInputChecker(this, f, bufferSize))
: getRawFileSystem().open(f, bufferSize);
FileSystem fs;
InputStream in;
if (verifyChecksum) {
fs = this;
in = new ChecksumFSInputChecker(this, f, bufferSize);
} else {
fs = getRawFileSystem();
in = fs.open(f, bufferSize);
}
return new FSDataBoundedInputStream(fs, f, in);
}
/** {@inheritDoc} */