Examples with FileChecksum org.apache.hadoop.fs.FileChecksum used on opensource projects

Example 1 with FileChecksum

use of org.apache.hadoop.fs.FileChecksum in project hadoop by apache.

the class HttpFSFileSystem method getFileChecksum.

@Override
public FileChecksum getFileChecksum(Path f) throws IOException {
    Map<String, String> params = new HashMap<String, String>();
    params.put(OP_PARAM, Operation.GETFILECHECKSUM.toString());
    HttpURLConnection conn = getConnection(Operation.GETFILECHECKSUM.getMethod(), params, f, true);
    HttpExceptionUtils.validateResponse(conn, HttpURLConnection.HTTP_OK);
    final JSONObject json = (JSONObject) ((JSONObject) HttpFSUtils.jsonParse(conn)).get(FILE_CHECKSUM_JSON);
    return new FileChecksum() {

        @Override
        public String getAlgorithmName() {
            return (String) json.get(CHECKSUM_ALGORITHM_JSON);
        }

        @Override
        public int getLength() {
            return ((Long) json.get(CHECKSUM_LENGTH_JSON)).intValue();
        }

        @Override
        public byte[] getBytes() {
            return StringUtils.hexStringToByte((String) json.get(CHECKSUM_BYTES_JSON));
        }

        @Override
        public void write(DataOutput out) throws IOException {
            throw new UnsupportedOperationException();
        }

        @Override
        public void readFields(DataInput in) throws IOException {
            throw new UnsupportedOperationException();
        }
    };
}

Example 2 with FileChecksum

use of org.apache.hadoop.fs.FileChecksum in project hadoop by apache.

the class TestFileChecksum method testStripedFileChecksumWithMissedDataBlocks1.

@Test(timeout = 90000)
public void testStripedFileChecksumWithMissedDataBlocks1() throws Exception {
    prepareTestFiles(fileSize, new String[] { stripedFile1 });
    FileChecksum stripedFileChecksum1 = getFileChecksum(stripedFile1, fileSize, false);
    FileChecksum stripedFileChecksumRecon = getFileChecksum(stripedFile1, fileSize, true);
    LOG.info("stripedFileChecksum1:" + stripedFileChecksum1);
    LOG.info("stripedFileChecksumRecon:" + stripedFileChecksumRecon);
    Assert.assertTrue("Checksum mismatches!", stripedFileChecksum1.equals(stripedFileChecksumRecon));
}

Example 3 with FileChecksum

use of org.apache.hadoop.fs.FileChecksum in project hadoop by apache.

the class TestFileChecksum method testStripedFileChecksumWithMissedDataBlocksRangeQuery.

private void testStripedFileChecksumWithMissedDataBlocksRangeQuery(String stripedFile, int requestedLen) throws Exception {
    LOG.info("Checksum file:{}, requested length:{}", stripedFile, requestedLen);
    prepareTestFiles(fileSize, new String[] { stripedFile });
    FileChecksum stripedFileChecksum1 = getFileChecksum(stripedFile, requestedLen, false);
    FileChecksum stripedFileChecksumRecon = getFileChecksum(stripedFile, requestedLen, true);
    LOG.info("stripedFileChecksum1:" + stripedFileChecksum1);
    LOG.info("stripedFileChecksumRecon:" + stripedFileChecksumRecon);
    Assert.assertTrue("Checksum mismatches!", stripedFileChecksum1.equals(stripedFileChecksumRecon));
}

Example 4 with FileChecksum

use of org.apache.hadoop.fs.FileChecksum in project hadoop by apache.

the class TestFileChecksum method getFileChecksum.

private FileChecksum getFileChecksum(String filePath, int range, boolean killDn) throws Exception {
    int dnIdxToDie = -1;
    if (killDn) {
        dnIdxToDie = getDataNodeToKill(filePath);
        DataNode dnToDie = cluster.getDataNodes().get(dnIdxToDie);
        shutdownDataNode(dnToDie);
    }
    Path testPath = new Path(filePath);
    FileChecksum fc;
    if (range >= 0) {
        fc = fs.getFileChecksum(testPath, range);
    } else {
        fc = fs.getFileChecksum(testPath);
    }
    if (dnIdxToDie != -1) {
        cluster.restartDataNode(dnIdxToDie);
    }
    return fc;
}

Example 5 with FileChecksum

use of org.apache.hadoop.fs.FileChecksum in project hadoop by apache.

the class TestGetFileChecksum method testGetFileChecksum.

public void testGetFileChecksum(final Path foo, final int appendLength) throws Exception {
    final int appendRounds = 16;
    FileChecksum[] fc = new FileChecksum[appendRounds + 1];
    DFSTestUtil.createFile(dfs, foo, appendLength, REPLICATION, 0L);
    fc[0] = dfs.getFileChecksum(foo);
    for (int i = 0; i < appendRounds; i++) {
        DFSTestUtil.appendFile(dfs, foo, appendLength);
        fc[i + 1] = dfs.getFileChecksum(foo);
    }
    for (int i = 0; i < appendRounds + 1; i++) {
        FileChecksum checksum = dfs.getFileChecksum(foo, appendLength * (i + 1));
        Assert.assertTrue(checksum.equals(fc[i]));
    }
}