/** DFS client read bytes starting from the specified position. */
private void dfsClientReadFileFromPosition(Path corruptedFile)
throws UnresolvedLinkException, IOException {
DFSInputStream in = dfs.dfs.open(corruptedFile.toUri().getPath());
byte[] buf = new byte[buffersize];
int startPosition = 2;
int nRead = 0; // total number of bytes read
try {
do {
nRead = in.read(startPosition, buf, 0, buf.length);
startPosition += buf.length;
} while (nRead > 0);
} catch (BlockMissingException bme) {
LOG.debug("DfsClientReadFile caught BlockMissingException.");
}
}
/** Ask dfs client to read the file */
private void dfsClientReadFile(Path corruptedFile) throws IOException, UnresolvedLinkException {
DFSInputStream in = dfs.dfs.open(corruptedFile.toUri().getPath());
byte[] buf = new byte[buffersize];
int nRead = 0; // total number of bytes read
try {
do {
nRead = in.read(buf, 0, buf.length);
} while (nRead > 0);
} catch (ChecksumException ce) {
// caught ChecksumException if all replicas are bad, ignore and continue.
LOG.debug("DfsClientReadFile caught ChecksumException.");
} catch (BlockMissingException bme) {
// caught BlockMissingException, ignore.
LOG.debug("DfsClientReadFile caught BlockMissingException.");
}
}
