HDFS-3667. Add retry support to WebHdfsFileSystem.
git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1366601 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Tsz-wo Sze
parent
0c4e670eff
commit
e4eec269d9
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@ -373,6 +373,8 @@ Branch-2 ( Unreleased changes )
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HDFS-3697. Enable fadvise readahead by default. (todd)
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HDFS-3667. Add retry support to WebHdfsFileSystem. (szetszwo)
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BUG FIXES
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HDFS-3385. The last block of INodeFileUnderConstruction is not
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@ -57,9 +57,9 @@ public abstract class ByteRangeInputStream extends FSInputStream {
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return url;
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}
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protected abstract HttpURLConnection openConnection() throws IOException;
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protected abstract HttpURLConnection openConnection(final long offset) throws IOException;
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/** Connect to server with a data offset. */
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protected abstract HttpURLConnection connect(final long offset,
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final boolean resolved) throws IOException;
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}
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enum StreamStatus {
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@ -85,9 +85,6 @@ public abstract class ByteRangeInputStream extends FSInputStream {
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this.resolvedURL = r;
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}
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protected abstract void checkResponseCode(final HttpURLConnection connection
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) throws IOException;
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protected abstract URL getResolvedUrl(final HttpURLConnection connection
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) throws IOException;
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@ -113,13 +110,10 @@ public abstract class ByteRangeInputStream extends FSInputStream {
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protected InputStream openInputStream() throws IOException {
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// Use the original url if no resolved url exists, eg. if
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// it's the first time a request is made.
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final URLOpener opener =
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(resolvedURL.getURL() == null) ? originalURL : resolvedURL;
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final HttpURLConnection connection = opener.openConnection(startPos);
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connection.connect();
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checkResponseCode(connection);
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final boolean resolved = resolvedURL.getURL() != null;
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final URLOpener opener = resolved? resolvedURL: originalURL;
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final HttpURLConnection connection = opener.connect(startPos, resolved);
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final String cl = connection.getHeaderField(StreamFile.CONTENT_LENGTH);
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if (cl == null) {
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throw new IOException(StreamFile.CONTENT_LENGTH+" header is missing");
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@ -342,19 +342,28 @@ public class HftpFileSystem extends FileSystem
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super(url);
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}
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@Override
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protected HttpURLConnection openConnection() throws IOException {
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return (HttpURLConnection)URLUtils.openConnection(url);
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}
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/** Use HTTP Range header for specifying offset. */
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@Override
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protected HttpURLConnection openConnection(final long offset) throws IOException {
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protected HttpURLConnection connect(final long offset,
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final boolean resolved) throws IOException {
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final HttpURLConnection conn = openConnection();
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conn.setRequestMethod("GET");
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if (offset != 0L) {
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conn.setRequestProperty("Range", "bytes=" + offset + "-");
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}
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conn.connect();
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//Expects HTTP_OK or HTTP_PARTIAL response codes.
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final int code = conn.getResponseCode();
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if (offset != 0L && code != HttpURLConnection.HTTP_PARTIAL) {
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throw new IOException("HTTP_PARTIAL expected, received " + code);
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} else if (offset == 0L && code != HttpURLConnection.HTTP_OK) {
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throw new IOException("HTTP_OK expected, received " + code);
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}
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return conn;
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}
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}
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@ -368,22 +377,6 @@ public class HftpFileSystem extends FileSystem
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this(new RangeHeaderUrlOpener(url), new RangeHeaderUrlOpener(null));
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}
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/** Expects HTTP_OK and HTTP_PARTIAL response codes. */
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@Override
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protected void checkResponseCode(final HttpURLConnection connection
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) throws IOException {
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final int code = connection.getResponseCode();
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if (startPos != 0 && code != HttpURLConnection.HTTP_PARTIAL) {
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// We asked for a byte range but did not receive a partial content
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// response...
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throw new IOException("HTTP_PARTIAL expected, received " + code);
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} else if (startPos == 0 && code != HttpURLConnection.HTTP_OK) {
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// We asked for all bytes from the beginning but didn't receive a 200
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// response (none of the other 2xx codes are valid here)
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throw new IOException("HTTP_OK expected, received " + code);
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}
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}
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@Override
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protected URL getResolvedUrl(final HttpURLConnection connection) {
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return connection.getURL();
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@ -259,7 +259,7 @@ public class NameNodeProxies {
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*
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* Note that dfs.client.retry.max < 0 is not allowed.
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*/
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private static RetryPolicy getDefaultRpcRetryPolicy(Configuration conf) {
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public static RetryPolicy getDefaultRetryPolicy(Configuration conf) {
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final RetryPolicy multipleLinearRandomRetry = getMultipleLinearRandomRetry(conf);
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if (LOG.isDebugEnabled()) {
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LOG.debug("multipleLinearRandomRetry = " + multipleLinearRandomRetry);
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@ -300,6 +300,13 @@ public class NameNodeProxies {
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+ p.getClass().getSimpleName() + ", exception=" + e);
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return p.shouldRetry(e, retries, failovers, isMethodIdempotent);
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}
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@Override
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public String toString() {
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return "RetryPolicy[" + multipleLinearRandomRetry + ", "
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+ RetryPolicies.TRY_ONCE_THEN_FAIL.getClass().getSimpleName()
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+ "]";
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}
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};
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}
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}
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@ -335,7 +342,7 @@ public class NameNodeProxies {
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boolean withRetries) throws IOException {
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RPC.setProtocolEngine(conf, ClientNamenodeProtocolPB.class, ProtobufRpcEngine.class);
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final RetryPolicy defaultPolicy = getDefaultRpcRetryPolicy(conf);
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final RetryPolicy defaultPolicy = getDefaultRetryPolicy(conf);
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final long version = RPC.getProtocolVersion(ClientNamenodeProtocolPB.class);
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ClientNamenodeProtocolPB proxy = RPC.getProtocolProxy(
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ClientNamenodeProtocolPB.class, version, address, ugi, conf,
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@ -55,6 +55,7 @@ import org.apache.hadoop.fs.permission.FsPermission;
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import org.apache.hadoop.hdfs.ByteRangeInputStream;
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import org.apache.hadoop.hdfs.DFSConfigKeys;
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import org.apache.hadoop.hdfs.DFSUtil;
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import org.apache.hadoop.hdfs.NameNodeProxies;
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import org.apache.hadoop.hdfs.protocol.DSQuotaExceededException;
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import org.apache.hadoop.hdfs.protocol.HdfsFileStatus;
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import org.apache.hadoop.hdfs.protocol.NSQuotaExceededException;
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@ -88,6 +89,7 @@ import org.apache.hadoop.hdfs.web.resources.ReplicationParam;
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import org.apache.hadoop.hdfs.web.resources.TokenArgumentParam;
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import org.apache.hadoop.hdfs.web.resources.UserParam;
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import org.apache.hadoop.io.Text;
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import org.apache.hadoop.io.retry.RetryPolicy;
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import org.apache.hadoop.ipc.RemoteException;
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import org.apache.hadoop.net.NetUtils;
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import org.apache.hadoop.security.AccessControlException;
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@ -147,6 +149,7 @@ public class WebHdfsFileSystem extends FileSystem
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private URI uri;
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private Token<?> delegationToken;
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private final AuthenticatedURL.Token authToken = new AuthenticatedURL.Token();
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private RetryPolicy retryPolicy = null;
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private Path workingDir;
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{
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@ -179,6 +182,7 @@ public class WebHdfsFileSystem extends FileSystem
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throw new IllegalArgumentException(e);
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}
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this.nnAddr = NetUtils.createSocketAddr(uri.getAuthority(), getDefaultPort());
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this.retryPolicy = NameNodeProxies.getDefaultRetryPolicy(conf);
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this.workingDir = getHomeDirectory();
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if (UserGroupInformation.isSecurityEnabled()) {
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@ -276,13 +280,13 @@ public class WebHdfsFileSystem extends FileSystem
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}
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private static Map<?, ?> validateResponse(final HttpOpParam.Op op,
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final HttpURLConnection conn) throws IOException {
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final HttpURLConnection conn, boolean unwrapException) throws IOException {
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final int code = conn.getResponseCode();
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if (code != op.getExpectedHttpResponseCode()) {
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final Map<?, ?> m;
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try {
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m = jsonParse(conn, true);
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} catch(IOException e) {
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} catch(Exception e) {
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throw new IOException("Unexpected HTTP response: code=" + code + " != "
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+ op.getExpectedHttpResponseCode() + ", " + op.toQueryString()
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+ ", message=" + conn.getResponseMessage(), e);
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@ -293,7 +297,30 @@ public class WebHdfsFileSystem extends FileSystem
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}
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final RemoteException re = JsonUtil.toRemoteException(m);
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throw re.unwrapRemoteException(AccessControlException.class,
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throw unwrapException? toIOException(re): re;
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}
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return null;
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}
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/**
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* Covert an exception to an IOException.
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*
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* For a non-IOException, wrap it with IOException.
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* For a RemoteException, unwrap it.
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* For an IOException which is not a RemoteException, return it.
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*/
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private static IOException toIOException(Exception e) {
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if (!(e instanceof IOException)) {
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return new IOException(e);
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}
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final IOException ioe = (IOException)e;
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if (!(ioe instanceof RemoteException)) {
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return ioe;
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}
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final RemoteException re = (RemoteException)ioe;
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return re.unwrapRemoteException(AccessControlException.class,
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InvalidToken.class,
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AuthenticationException.class,
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AuthorizationException.class,
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@ -305,8 +332,6 @@ public class WebHdfsFileSystem extends FileSystem
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DSQuotaExceededException.class,
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NSQuotaExceededException.class);
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}
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return null;
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}
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/**
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* Return a URL pointing to given path on the namenode.
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@ -362,68 +387,13 @@ public class WebHdfsFileSystem extends FileSystem
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}
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private HttpURLConnection getHttpUrlConnection(URL url)
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throws IOException {
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throws IOException, AuthenticationException {
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final HttpURLConnection conn;
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try {
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if (ugi.hasKerberosCredentials()) {
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conn = new AuthenticatedURL(AUTH).openConnection(url, authToken);
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} else {
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conn = (HttpURLConnection)url.openConnection();
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}
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} catch (AuthenticationException e) {
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throw new IOException("Authentication failed, url=" + url, e);
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}
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return conn;
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}
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private HttpURLConnection httpConnect(final HttpOpParam.Op op, final Path fspath,
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final Param<?,?>... parameters) throws IOException {
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final URL url = toUrl(op, fspath, parameters);
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//connect and get response
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HttpURLConnection conn = getHttpUrlConnection(url);
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try {
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conn.setRequestMethod(op.getType().toString());
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if (op.getDoOutput()) {
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conn = twoStepWrite(conn, op);
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conn.setRequestProperty("Content-Type", "application/octet-stream");
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}
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conn.setDoOutput(op.getDoOutput());
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conn.connect();
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return conn;
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} catch (IOException e) {
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conn.disconnect();
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throw e;
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}
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}
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/**
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* Two-step Create/Append:
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* Step 1) Submit a Http request with neither auto-redirect nor data.
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* Step 2) Submit another Http request with the URL from the Location header with data.
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*
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* The reason of having two-step create/append is for preventing clients to
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* send out the data before the redirect. This issue is addressed by the
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* "Expect: 100-continue" header in HTTP/1.1; see RFC 2616, Section 8.2.3.
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* Unfortunately, there are software library bugs (e.g. Jetty 6 http server
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* and Java 6 http client), which do not correctly implement "Expect:
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* 100-continue". The two-step create/append is a temporary workaround for
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* the software library bugs.
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*/
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static HttpURLConnection twoStepWrite(HttpURLConnection conn,
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final HttpOpParam.Op op) throws IOException {
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//Step 1) Submit a Http request with neither auto-redirect nor data.
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conn.setInstanceFollowRedirects(false);
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conn.setDoOutput(false);
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conn.connect();
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validateResponse(HttpOpParam.TemporaryRedirectOp.valueOf(op), conn);
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final String redirect = conn.getHeaderField("Location");
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conn.disconnect();
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//Step 2) Submit another Http request with the URL from the Location header with data.
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conn = (HttpURLConnection)new URL(redirect).openConnection();
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conn.setRequestMethod(op.getType().toString());
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conn.setChunkedStreamingMode(32 << 10); //32kB-chunk
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return conn;
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}
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@ -439,12 +409,158 @@ public class WebHdfsFileSystem extends FileSystem
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*/
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private Map<?, ?> run(final HttpOpParam.Op op, final Path fspath,
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final Param<?,?>... parameters) throws IOException {
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final HttpURLConnection conn = httpConnect(op, fspath, parameters);
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return new Runner(op, fspath, parameters).run().json;
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}
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/**
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* This class is for initialing a HTTP connection, connecting to server,
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* obtaining a response, and also handling retry on failures.
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*/
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class Runner {
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private final HttpOpParam.Op op;
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private final URL url;
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private final boolean redirected;
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private boolean checkRetry;
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private HttpURLConnection conn = null;
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private Map<?, ?> json = null;
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Runner(final HttpOpParam.Op op, final URL url, final boolean redirected) {
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this.op = op;
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this.url = url;
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this.redirected = redirected;
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}
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Runner(final HttpOpParam.Op op, final Path fspath,
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final Param<?,?>... parameters) throws IOException {
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this(op, toUrl(op, fspath, parameters), false);
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}
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Runner(final HttpOpParam.Op op, final HttpURLConnection conn) {
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this(op, null, false);
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this.conn = conn;
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}
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private void init() throws IOException {
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checkRetry = !redirected;
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try {
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final Map<?, ?> m = validateResponse(op, conn);
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return m != null? m: jsonParse(conn, false);
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} finally {
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conn = getHttpUrlConnection(url);
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} catch(AuthenticationException ae) {
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checkRetry = false;
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throw new IOException("Authentication failed, url=" + url, ae);
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}
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}
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private void connect() throws IOException {
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connect(op.getDoOutput());
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}
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private void connect(boolean doOutput) throws IOException {
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conn.setRequestMethod(op.getType().toString());
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conn.setDoOutput(doOutput);
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conn.setInstanceFollowRedirects(false);
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conn.connect();
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}
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private void disconnect() {
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if (conn != null) {
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conn.disconnect();
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conn = null;
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}
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}
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Runner run() throws IOException {
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for(int retry = 0; ; retry++) {
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try {
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init();
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if (op.getDoOutput()) {
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twoStepWrite();
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} else {
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getResponse(op != GetOpParam.Op.OPEN);
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}
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return this;
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} catch(IOException ioe) {
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shouldRetry(ioe, retry);
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}
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}
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}
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private void shouldRetry(final IOException ioe, final int retry
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) throws IOException {
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if (checkRetry) {
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try {
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final RetryPolicy.RetryAction a = retryPolicy.shouldRetry(
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ioe, retry, 0, true);
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if (a.action == RetryPolicy.RetryAction.RetryDecision.RETRY) {
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LOG.info("Retrying connect to namenode: " + nnAddr
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+ ". Already tried " + retry + " time(s); retry policy is "
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+ retryPolicy + ", delay " + a.delayMillis + "ms.");
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Thread.sleep(a.delayMillis);
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return;
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}
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} catch(Exception e) {
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LOG.warn("Original exception is ", ioe);
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throw toIOException(e);
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}
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}
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throw toIOException(ioe);
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}
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/**
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* Two-step Create/Append:
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* Step 1) Submit a Http request with neither auto-redirect nor data.
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* Step 2) Submit another Http request with the URL from the Location header with data.
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*
|
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* The reason of having two-step create/append is for preventing clients to
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* send out the data before the redirect. This issue is addressed by the
|
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* "Expect: 100-continue" header in HTTP/1.1; see RFC 2616, Section 8.2.3.
|
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* Unfortunately, there are software library bugs (e.g. Jetty 6 http server
|
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* and Java 6 http client), which do not correctly implement "Expect:
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* 100-continue". The two-step create/append is a temporary workaround for
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* the software library bugs.
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*/
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HttpURLConnection twoStepWrite() throws IOException {
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//Step 1) Submit a Http request with neither auto-redirect nor data.
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connect(false);
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validateResponse(HttpOpParam.TemporaryRedirectOp.valueOf(op), conn, false);
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final String redirect = conn.getHeaderField("Location");
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disconnect();
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checkRetry = false;
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//Step 2) Submit another Http request with the URL from the Location header with data.
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conn = (HttpURLConnection)new URL(redirect).openConnection();
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conn.setChunkedStreamingMode(32 << 10); //32kB-chunk
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connect();
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return conn;
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}
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FSDataOutputStream write(final int bufferSize) throws IOException {
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return WebHdfsFileSystem.this.write(op, conn, bufferSize);
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}
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void getResponse(boolean getJsonAndDisconnect) throws IOException {
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try {
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connect();
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if (!redirected && op.getRedirect()) {
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final String redirect = conn.getHeaderField("Location");
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json = validateResponse(HttpOpParam.TemporaryRedirectOp.valueOf(op),
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conn, false);
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disconnect();
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checkRetry = false;
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conn = (HttpURLConnection)new URL(redirect).openConnection();
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connect();
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}
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json = validateResponse(op, conn, false);
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if (json == null && getJsonAndDisconnect) {
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json = jsonParse(conn, false);
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}
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} finally {
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if (getJsonAndDisconnect) {
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disconnect();
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}
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}
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}
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}
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@ -578,7 +694,7 @@ public class WebHdfsFileSystem extends FileSystem
|
|||
super.close();
|
||||
} finally {
|
||||
try {
|
||||
validateResponse(op, conn);
|
||||
validateResponse(op, conn, true);
|
||||
} finally {
|
||||
conn.disconnect();
|
||||
}
|
||||
|
|
@ -594,13 +710,14 @@ public class WebHdfsFileSystem extends FileSystem
|
|||
statistics.incrementWriteOps(1);
|
||||
|
||||
final HttpOpParam.Op op = PutOpParam.Op.CREATE;
|
||||
final HttpURLConnection conn = httpConnect(op, f,
|
||||
return new Runner(op, f,
|
||||
new PermissionParam(applyUMask(permission)),
|
||||
new OverwriteParam(overwrite),
|
||||
new BufferSizeParam(bufferSize),
|
||||
new ReplicationParam(replication),
|
||||
new BlockSizeParam(blockSize));
|
||||
return write(op, conn, bufferSize);
|
||||
new BlockSizeParam(blockSize))
|
||||
.run()
|
||||
.write(bufferSize);
|
||||
}
|
||||
|
||||
@Override
|
||||
|
|
@ -609,9 +726,9 @@ public class WebHdfsFileSystem extends FileSystem
|
|||
statistics.incrementWriteOps(1);
|
||||
|
||||
final HttpOpParam.Op op = PostOpParam.Op.APPEND;
|
||||
final HttpURLConnection conn = httpConnect(op, f,
|
||||
new BufferSizeParam(bufferSize));
|
||||
return write(op, conn, bufferSize);
|
||||
return new Runner(op, f, new BufferSizeParam(bufferSize))
|
||||
.run()
|
||||
.write(bufferSize);
|
||||
}
|
||||
|
||||
@SuppressWarnings("deprecation")
|
||||
|
|
@ -638,26 +755,17 @@ public class WebHdfsFileSystem extends FileSystem
|
|||
}
|
||||
|
||||
class OffsetUrlOpener extends ByteRangeInputStream.URLOpener {
|
||||
/** The url with offset parameter */
|
||||
private URL offsetUrl;
|
||||
|
||||
OffsetUrlOpener(final URL url) {
|
||||
super(url);
|
||||
}
|
||||
|
||||
/** Open connection with offset url. */
|
||||
/** Setup offset url and connect. */
|
||||
@Override
|
||||
protected HttpURLConnection openConnection() throws IOException {
|
||||
return getHttpUrlConnection(offsetUrl);
|
||||
}
|
||||
|
||||
/** Setup offset url before open connection. */
|
||||
@Override
|
||||
protected HttpURLConnection openConnection(final long offset) throws IOException {
|
||||
offsetUrl = offset == 0L? url: new URL(url + "&" + new OffsetParam(offset));
|
||||
final HttpURLConnection conn = openConnection();
|
||||
conn.setRequestMethod("GET");
|
||||
return conn;
|
||||
protected HttpURLConnection connect(final long offset,
|
||||
final boolean resolved) throws IOException {
|
||||
final URL offsetUrl = offset == 0L? url
|
||||
: new URL(url + "&" + new OffsetParam(offset));
|
||||
return new Runner(GetOpParam.Op.OPEN, offsetUrl, resolved).run().conn;
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -699,12 +807,6 @@ public class WebHdfsFileSystem extends FileSystem
|
|||
super(o, r);
|
||||
}
|
||||
|
||||
@Override
|
||||
protected void checkResponseCode(final HttpURLConnection connection
|
||||
) throws IOException {
|
||||
validateResponse(GetOpParam.Op.OPEN, connection);
|
||||
}
|
||||
|
||||
/** Remove offset parameter before returning the resolved url. */
|
||||
@Override
|
||||
protected URL getResolvedUrl(final HttpURLConnection connection
|
||||
|
|
|
|||
|
|
@ -43,6 +43,11 @@ public class DeleteOpParam extends HttpOpParam<DeleteOpParam.Op> {
|
|||
return false;
|
||||
}
|
||||
|
||||
@Override
|
||||
public boolean getRedirect() {
|
||||
return false;
|
||||
}
|
||||
|
||||
@Override
|
||||
public int getExpectedHttpResponseCode() {
|
||||
return expectedHttpResponseCode;
|
||||
|
|
|
|||
|
|
@ -23,25 +23,27 @@ import java.net.HttpURLConnection;
|
|||
public class GetOpParam extends HttpOpParam<GetOpParam.Op> {
|
||||
/** Get operations. */
|
||||
public static enum Op implements HttpOpParam.Op {
|
||||
OPEN(HttpURLConnection.HTTP_OK),
|
||||
OPEN(true, HttpURLConnection.HTTP_OK),
|
||||
|
||||
GETFILESTATUS(HttpURLConnection.HTTP_OK),
|
||||
LISTSTATUS(HttpURLConnection.HTTP_OK),
|
||||
GETCONTENTSUMMARY(HttpURLConnection.HTTP_OK),
|
||||
GETFILECHECKSUM(HttpURLConnection.HTTP_OK),
|
||||
GETFILESTATUS(false, HttpURLConnection.HTTP_OK),
|
||||
LISTSTATUS(false, HttpURLConnection.HTTP_OK),
|
||||
GETCONTENTSUMMARY(false, HttpURLConnection.HTTP_OK),
|
||||
GETFILECHECKSUM(true, HttpURLConnection.HTTP_OK),
|
||||
|
||||
GETHOMEDIRECTORY(HttpURLConnection.HTTP_OK),
|
||||
GETDELEGATIONTOKEN(HttpURLConnection.HTTP_OK),
|
||||
GETDELEGATIONTOKENS(HttpURLConnection.HTTP_OK),
|
||||
GETHOMEDIRECTORY(false, HttpURLConnection.HTTP_OK),
|
||||
GETDELEGATIONTOKEN(false, HttpURLConnection.HTTP_OK),
|
||||
GETDELEGATIONTOKENS(false, HttpURLConnection.HTTP_OK),
|
||||
|
||||
/** GET_BLOCK_LOCATIONS is a private unstable op. */
|
||||
GET_BLOCK_LOCATIONS(HttpURLConnection.HTTP_OK),
|
||||
GET_BLOCK_LOCATIONS(false, HttpURLConnection.HTTP_OK),
|
||||
|
||||
NULL(HttpURLConnection.HTTP_NOT_IMPLEMENTED);
|
||||
NULL(false, HttpURLConnection.HTTP_NOT_IMPLEMENTED);
|
||||
|
||||
final boolean redirect;
|
||||
final int expectedHttpResponseCode;
|
||||
|
||||
Op(final int expectedHttpResponseCode) {
|
||||
Op(final boolean redirect, final int expectedHttpResponseCode) {
|
||||
this.redirect = redirect;
|
||||
this.expectedHttpResponseCode = expectedHttpResponseCode;
|
||||
}
|
||||
|
||||
|
|
@ -55,6 +57,11 @@ public class GetOpParam extends HttpOpParam<GetOpParam.Op> {
|
|||
return false;
|
||||
}
|
||||
|
||||
@Override
|
||||
public boolean getRedirect() {
|
||||
return redirect;
|
||||
}
|
||||
|
||||
@Override
|
||||
public int getExpectedHttpResponseCode() {
|
||||
return expectedHttpResponseCode;
|
||||
|
|
|
|||
|
|
@ -17,6 +17,10 @@
|
|||
*/
|
||||
package org.apache.hadoop.hdfs.web.resources;
|
||||
|
||||
import java.util.Arrays;
|
||||
import java.util.Collections;
|
||||
import java.util.List;
|
||||
|
||||
import javax.ws.rs.core.Response;
|
||||
|
||||
|
||||
|
|
@ -42,6 +46,9 @@ public abstract class HttpOpParam<E extends Enum<E> & HttpOpParam.Op>
|
|||
/** @return true if the operation will do output. */
|
||||
public boolean getDoOutput();
|
||||
|
||||
/** @return true if the operation will be redirected. */
|
||||
public boolean getRedirect();
|
||||
|
||||
/** @return true the expected http response code. */
|
||||
public int getExpectedHttpResponseCode();
|
||||
|
||||
|
|
@ -51,15 +58,25 @@ public abstract class HttpOpParam<E extends Enum<E> & HttpOpParam.Op>
|
|||
|
||||
/** Expects HTTP response 307 "Temporary Redirect". */
|
||||
public static class TemporaryRedirectOp implements Op {
|
||||
static final TemporaryRedirectOp CREATE = new TemporaryRedirectOp(PutOpParam.Op.CREATE);
|
||||
static final TemporaryRedirectOp APPEND = new TemporaryRedirectOp(PostOpParam.Op.APPEND);
|
||||
static final TemporaryRedirectOp CREATE = new TemporaryRedirectOp(
|
||||
PutOpParam.Op.CREATE);
|
||||
static final TemporaryRedirectOp APPEND = new TemporaryRedirectOp(
|
||||
PostOpParam.Op.APPEND);
|
||||
static final TemporaryRedirectOp OPEN = new TemporaryRedirectOp(
|
||||
GetOpParam.Op.OPEN);
|
||||
static final TemporaryRedirectOp GETFILECHECKSUM = new TemporaryRedirectOp(
|
||||
GetOpParam.Op.GETFILECHECKSUM);
|
||||
|
||||
static final List<TemporaryRedirectOp> values
|
||||
= Collections.unmodifiableList(Arrays.asList(
|
||||
new TemporaryRedirectOp[]{CREATE, APPEND, OPEN, GETFILECHECKSUM}));
|
||||
|
||||
/** Get an object for the given op. */
|
||||
public static TemporaryRedirectOp valueOf(final Op op) {
|
||||
if (op == CREATE.op) {
|
||||
return CREATE;
|
||||
} else if (op == APPEND.op) {
|
||||
return APPEND;
|
||||
for(TemporaryRedirectOp t : values) {
|
||||
if (op == t.op) {
|
||||
return t;
|
||||
}
|
||||
}
|
||||
throw new IllegalArgumentException(op + " not found.");
|
||||
}
|
||||
|
|
@ -80,6 +97,11 @@ public abstract class HttpOpParam<E extends Enum<E> & HttpOpParam.Op>
|
|||
return op.getDoOutput();
|
||||
}
|
||||
|
||||
@Override
|
||||
public boolean getRedirect() {
|
||||
return false;
|
||||
}
|
||||
|
||||
/** Override the original expected response with "Temporary Redirect". */
|
||||
@Override
|
||||
public int getExpectedHttpResponseCode() {
|
||||
|
|
|
|||
|
|
@ -43,6 +43,11 @@ public class PostOpParam extends HttpOpParam<PostOpParam.Op> {
|
|||
return true;
|
||||
}
|
||||
|
||||
@Override
|
||||
public boolean getRedirect() {
|
||||
return true;
|
||||
}
|
||||
|
||||
@Override
|
||||
public int getExpectedHttpResponseCode() {
|
||||
return expectedHttpResponseCode;
|
||||
|
|
|
|||
|
|
@ -39,11 +39,11 @@ public class PutOpParam extends HttpOpParam<PutOpParam.Op> {
|
|||
|
||||
NULL(false, HttpURLConnection.HTTP_NOT_IMPLEMENTED);
|
||||
|
||||
final boolean doOutput;
|
||||
final boolean doOutputAndRedirect;
|
||||
final int expectedHttpResponseCode;
|
||||
|
||||
Op(final boolean doOutput, final int expectedHttpResponseCode) {
|
||||
this.doOutput = doOutput;
|
||||
Op(final boolean doOutputAndRedirect, final int expectedHttpResponseCode) {
|
||||
this.doOutputAndRedirect = doOutputAndRedirect;
|
||||
this.expectedHttpResponseCode = expectedHttpResponseCode;
|
||||
}
|
||||
|
||||
|
|
@ -54,7 +54,12 @@ public class PutOpParam extends HttpOpParam<PutOpParam.Op> {
|
|||
|
||||
@Override
|
||||
public boolean getDoOutput() {
|
||||
return doOutput;
|
||||
return doOutputAndRedirect;
|
||||
}
|
||||
|
||||
@Override
|
||||
public boolean getRedirect() {
|
||||
return doOutputAndRedirect;
|
||||
}
|
||||
|
||||
@Override
|
||||
|
|
|
|||
|
|
@ -47,6 +47,7 @@ import org.apache.commons.logging.LogFactory;
|
|||
import org.apache.commons.logging.impl.Log4JLogger;
|
||||
import org.apache.hadoop.conf.Configuration;
|
||||
import org.apache.hadoop.fs.CommonConfigurationKeys;
|
||||
import org.apache.hadoop.fs.FSDataInputStream;
|
||||
import org.apache.hadoop.fs.FSDataOutputStream;
|
||||
import org.apache.hadoop.fs.FileChecksum;
|
||||
import org.apache.hadoop.fs.FileStatus;
|
||||
|
|
@ -66,6 +67,7 @@ import org.apache.hadoop.hdfs.protocol.LocatedBlocks;
|
|||
import org.apache.hadoop.hdfs.server.namenode.NameNode;
|
||||
import org.apache.hadoop.hdfs.server.namenode.NotReplicatedYetException;
|
||||
import org.apache.hadoop.hdfs.server.protocol.NamenodeProtocols;
|
||||
import org.apache.hadoop.hdfs.web.WebHdfsTestUtil;
|
||||
import org.apache.hadoop.io.IOUtils;
|
||||
import org.apache.hadoop.io.LongWritable;
|
||||
import org.apache.hadoop.io.Writable;
|
||||
|
|
@ -74,6 +76,7 @@ import org.apache.hadoop.ipc.RPC;
|
|||
import org.apache.hadoop.ipc.RemoteException;
|
||||
import org.apache.hadoop.ipc.Server;
|
||||
import org.apache.hadoop.net.NetUtils;
|
||||
import org.apache.hadoop.security.UserGroupInformation;
|
||||
import org.apache.hadoop.test.GenericTestUtils;
|
||||
import org.apache.hadoop.util.Time;
|
||||
import org.apache.log4j.Level;
|
||||
|
|
@ -825,13 +828,17 @@ public class TestDFSClientRetries {
|
|||
/** Test client retry with namenode restarting. */
|
||||
@Test
|
||||
public void testNamenodeRestart() throws Exception {
|
||||
namenodeRestartTest(new Configuration(), false);
|
||||
}
|
||||
|
||||
public static void namenodeRestartTest(final Configuration conf,
|
||||
final boolean isWebHDFS) throws Exception {
|
||||
((Log4JLogger)DFSClient.LOG).getLogger().setLevel(Level.ALL);
|
||||
|
||||
final List<Exception> exceptions = new ArrayList<Exception>();
|
||||
|
||||
final Path dir = new Path("/testNamenodeRestart");
|
||||
|
||||
final Configuration conf = new Configuration();
|
||||
conf.setBoolean(DFSConfigKeys.DFS_CLIENT_RETRY_POLICY_ENABLED_KEY, true);
|
||||
|
||||
final short numDatanodes = 3;
|
||||
|
|
@ -841,16 +848,18 @@ public class TestDFSClientRetries {
|
|||
try {
|
||||
cluster.waitActive();
|
||||
final DistributedFileSystem dfs = cluster.getFileSystem();
|
||||
final FileSystem fs = isWebHDFS?
|
||||
WebHdfsTestUtil.getWebHdfsFileSystem(conf): dfs;
|
||||
final URI uri = dfs.getUri();
|
||||
assertTrue(HdfsUtils.isHealthy(uri));
|
||||
|
||||
//create a file
|
||||
final long length = 1L << 20;
|
||||
final Path file1 = new Path(dir, "foo");
|
||||
DFSTestUtil.createFile(dfs, file1, length, numDatanodes, 20120406L);
|
||||
DFSTestUtil.createFile(fs, file1, length, numDatanodes, 20120406L);
|
||||
|
||||
//get file status
|
||||
final FileStatus s1 = dfs.getFileStatus(file1);
|
||||
final FileStatus s1 = fs.getFileStatus(file1);
|
||||
assertEquals(length, s1.getLen());
|
||||
|
||||
//shutdown namenode
|
||||
|
|
@ -858,6 +867,25 @@ public class TestDFSClientRetries {
|
|||
cluster.shutdownNameNode(0);
|
||||
assertFalse(HdfsUtils.isHealthy(uri));
|
||||
|
||||
//namenode is down, read the file in a thread
|
||||
final Thread reader = new Thread(new Runnable() {
|
||||
@Override
|
||||
public void run() {
|
||||
try {
|
||||
//it should retry till namenode is up.
|
||||
final FileSystem fs = createFsWithDifferentUsername(conf, isWebHDFS);
|
||||
final FSDataInputStream in = fs.open(file1);
|
||||
int count = 0;
|
||||
for(; in.read() != -1; count++);
|
||||
in.close();
|
||||
assertEquals(s1.getLen(), count);
|
||||
} catch (Exception e) {
|
||||
exceptions.add(e);
|
||||
}
|
||||
}
|
||||
});
|
||||
reader.start();
|
||||
|
||||
//namenode is down, create another file in a thread
|
||||
final Path file3 = new Path(dir, "file");
|
||||
final Thread thread = new Thread(new Runnable() {
|
||||
|
|
@ -865,7 +893,7 @@ public class TestDFSClientRetries {
|
|||
public void run() {
|
||||
try {
|
||||
//it should retry till namenode is up.
|
||||
final FileSystem fs = AppendTestUtil.createHdfsWithDifferentUsername(conf);
|
||||
final FileSystem fs = createFsWithDifferentUsername(conf, isWebHDFS);
|
||||
DFSTestUtil.createFile(fs, file3, length, numDatanodes, 20120406L);
|
||||
} catch (Exception e) {
|
||||
exceptions.add(e);
|
||||
|
|
@ -892,12 +920,15 @@ public class TestDFSClientRetries {
|
|||
}).start();
|
||||
|
||||
//namenode is down, it should retry until namenode is up again.
|
||||
final FileStatus s2 = dfs.getFileStatus(file1);
|
||||
final FileStatus s2 = fs.getFileStatus(file1);
|
||||
assertEquals(s1, s2);
|
||||
|
||||
//check file1 and file3
|
||||
thread.join();
|
||||
assertEquals(dfs.getFileChecksum(file1), dfs.getFileChecksum(file3));
|
||||
assertEquals(s1.getLen(), fs.getFileStatus(file3).getLen());
|
||||
assertEquals(fs.getFileChecksum(file1), fs.getFileChecksum(file3));
|
||||
|
||||
reader.join();
|
||||
|
||||
//enter safe mode
|
||||
assertTrue(HdfsUtils.isHealthy(uri));
|
||||
|
|
@ -922,8 +953,8 @@ public class TestDFSClientRetries {
|
|||
|
||||
//namenode is in safe mode, create should retry until it leaves safe mode.
|
||||
final Path file2 = new Path(dir, "bar");
|
||||
DFSTestUtil.createFile(dfs, file2, length, numDatanodes, 20120406L);
|
||||
assertEquals(dfs.getFileChecksum(file1), dfs.getFileChecksum(file2));
|
||||
DFSTestUtil.createFile(fs, file2, length, numDatanodes, 20120406L);
|
||||
assertEquals(fs.getFileChecksum(file1), fs.getFileChecksum(file2));
|
||||
|
||||
assertTrue(HdfsUtils.isHealthy(uri));
|
||||
|
||||
|
|
@ -931,7 +962,7 @@ public class TestDFSClientRetries {
|
|||
final Path nonExisting = new Path(dir, "nonExisting");
|
||||
LOG.info("setPermission: " + nonExisting);
|
||||
try {
|
||||
dfs.setPermission(nonExisting, new FsPermission((short)0));
|
||||
fs.setPermission(nonExisting, new FsPermission((short)0));
|
||||
fail();
|
||||
} catch(FileNotFoundException fnfe) {
|
||||
LOG.info("GOOD!", fnfe);
|
||||
|
|
@ -949,6 +980,17 @@ public class TestDFSClientRetries {
|
|||
}
|
||||
}
|
||||
|
||||
public static FileSystem createFsWithDifferentUsername(
|
||||
final Configuration conf, final boolean isWebHDFS
|
||||
) throws IOException, InterruptedException {
|
||||
String username = UserGroupInformation.getCurrentUser().getShortUserName()+"_XXX";
|
||||
UserGroupInformation ugi =
|
||||
UserGroupInformation.createUserForTesting(username, new String[]{"supergroup"});
|
||||
|
||||
return isWebHDFS? WebHdfsTestUtil.getWebHdfsFileSystemAs(ugi, conf)
|
||||
: DFSTestUtil.getFileSystemAs(ugi, conf);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testMultipleLinearRandomRetry() {
|
||||
parseMultipleLinearRandomRetry(null, "");
|
||||
|
|
|
|||
|
|
@ -44,7 +44,6 @@ import org.apache.hadoop.fs.FileSystem;
|
|||
import org.apache.hadoop.fs.Path;
|
||||
import org.apache.hadoop.fs.permission.FsPermission;
|
||||
import org.apache.hadoop.hdfs.DFSConfigKeys;
|
||||
import org.apache.hadoop.hdfs.DistributedFileSystem;
|
||||
import org.apache.hadoop.hdfs.HdfsConfiguration;
|
||||
import org.apache.hadoop.hdfs.MiniDFSCluster;
|
||||
import org.apache.hadoop.hdfs.security.token.delegation.DelegationTokenIdentifier;
|
||||
|
|
@ -140,9 +139,7 @@ public class TestDelegationTokenForProxyUser {
|
|||
.doAs(new PrivilegedExceptionAction<Token<DelegationTokenIdentifier>>() {
|
||||
@Override
|
||||
public Token<DelegationTokenIdentifier> run() throws IOException {
|
||||
DistributedFileSystem dfs = (DistributedFileSystem) cluster
|
||||
.getFileSystem();
|
||||
return dfs.getDelegationToken("RenewerUser");
|
||||
return cluster.getFileSystem().getDelegationToken("RenewerUser");
|
||||
}
|
||||
});
|
||||
DelegationTokenIdentifier identifier = new DelegationTokenIdentifier();
|
||||
|
|
@ -206,7 +203,7 @@ public class TestDelegationTokenForProxyUser {
|
|||
final PutOpParam.Op op = PutOpParam.Op.CREATE;
|
||||
final URL url = WebHdfsTestUtil.toUrl(webhdfs, op, f, new DoAsParam(PROXY_USER));
|
||||
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
|
||||
conn = WebHdfsTestUtil.twoStepWrite(conn, op);
|
||||
conn = WebHdfsTestUtil.twoStepWrite(webhdfs, op, conn);
|
||||
final FSDataOutputStream out = WebHdfsTestUtil.write(webhdfs, op, conn, 4096);
|
||||
out.write("Hello, webhdfs user!".getBytes());
|
||||
out.close();
|
||||
|
|
@ -221,7 +218,7 @@ public class TestDelegationTokenForProxyUser {
|
|||
final PostOpParam.Op op = PostOpParam.Op.APPEND;
|
||||
final URL url = WebHdfsTestUtil.toUrl(webhdfs, op, f, new DoAsParam(PROXY_USER));
|
||||
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
|
||||
conn = WebHdfsTestUtil.twoStepWrite(conn, op);
|
||||
conn = WebHdfsTestUtil.twoStepWrite(webhdfs, op, conn);
|
||||
final FSDataOutputStream out = WebHdfsTestUtil.write(webhdfs, op, conn, 4096);
|
||||
out.write("\nHello again!".getBytes());
|
||||
out.close();
|
||||
|
|
|
|||
|
|
@ -18,22 +18,10 @@
|
|||
package org.apache.hadoop.hdfs.web;
|
||||
|
||||
import static org.junit.Assert.assertEquals;
|
||||
import static org.junit.Assert.assertNull;
|
||||
import static org.junit.Assert.fail;
|
||||
import static org.mockito.Mockito.doReturn;
|
||||
import static org.mockito.Mockito.spy;
|
||||
import static org.mockito.Mockito.times;
|
||||
import static org.mockito.Mockito.verify;
|
||||
|
||||
import java.io.IOException;
|
||||
import java.net.URI;
|
||||
import java.net.URL;
|
||||
|
||||
import org.apache.hadoop.conf.Configuration;
|
||||
import org.apache.hadoop.fs.FileSystem;
|
||||
import org.apache.hadoop.hdfs.TestByteRangeInputStream.MockHttpURLConnection;
|
||||
import org.apache.hadoop.hdfs.web.WebHdfsFileSystem.OffsetUrlInputStream;
|
||||
import org.apache.hadoop.hdfs.web.WebHdfsFileSystem.OffsetUrlOpener;
|
||||
import org.junit.Test;
|
||||
|
||||
public class TestOffsetUrlInputStream {
|
||||
|
|
@ -73,65 +61,4 @@ public class TestOffsetUrlInputStream {
|
|||
WebHdfsFileSystem.removeOffsetParam(new URL(s)).toString());
|
||||
}
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testByteRange() throws Exception {
|
||||
final Configuration conf = new Configuration();
|
||||
final String uri = WebHdfsFileSystem.SCHEME + "://localhost:50070/";
|
||||
final WebHdfsFileSystem webhdfs = (WebHdfsFileSystem)FileSystem.get(new URI(uri), conf);
|
||||
|
||||
OffsetUrlOpener ospy = spy(webhdfs.new OffsetUrlOpener(new URL("http://test/")));
|
||||
doReturn(new MockHttpURLConnection(ospy.getURL())).when(ospy)
|
||||
.openConnection();
|
||||
OffsetUrlOpener rspy = spy(webhdfs.new OffsetUrlOpener((URL) null));
|
||||
doReturn(new MockHttpURLConnection(rspy.getURL())).when(rspy)
|
||||
.openConnection();
|
||||
final OffsetUrlInputStream is = new OffsetUrlInputStream(ospy, rspy);
|
||||
|
||||
assertEquals("getPos wrong", 0, is.getPos());
|
||||
|
||||
is.read();
|
||||
|
||||
assertNull("Initial call made incorrectly (Range Check)", ospy
|
||||
.openConnection().getRequestProperty("Range"));
|
||||
|
||||
assertEquals("getPos should be 1 after reading one byte", 1, is.getPos());
|
||||
|
||||
is.read();
|
||||
|
||||
assertEquals("getPos should be 2 after reading two bytes", 2, is.getPos());
|
||||
|
||||
// No additional connections should have been made (no seek)
|
||||
|
||||
rspy.setURL(new URL("http://resolvedurl/"));
|
||||
|
||||
is.seek(100);
|
||||
is.read();
|
||||
|
||||
assertEquals("getPos should be 101 after reading one byte", 101,
|
||||
is.getPos());
|
||||
|
||||
verify(rspy, times(1)).openConnection();
|
||||
|
||||
is.seek(101);
|
||||
is.read();
|
||||
|
||||
verify(rspy, times(1)).openConnection();
|
||||
|
||||
// Seek to 101 should not result in another request"
|
||||
|
||||
is.seek(2500);
|
||||
is.read();
|
||||
|
||||
((MockHttpURLConnection) rspy.openConnection()).setResponseCode(206);
|
||||
is.seek(0);
|
||||
|
||||
try {
|
||||
is.read();
|
||||
fail("Exception should be thrown when 206 response is given "
|
||||
+ "but 200 is expected");
|
||||
} catch (IOException e) {
|
||||
WebHdfsFileSystem.LOG.info(e.toString());
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -0,0 +1,37 @@
|
|||
/**
|
||||
* Licensed to the Apache Software Foundation (ASF) under one
|
||||
* or more contributor license agreements. See the NOTICE file
|
||||
* distributed with this work for additional information
|
||||
* regarding copyright ownership. The ASF licenses this file
|
||||
* to you under the Apache License, Version 2.0 (the
|
||||
* "License"); you may not use this file except in compliance
|
||||
* with the License. You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
package org.apache.hadoop.hdfs.web;
|
||||
|
||||
import org.apache.commons.logging.impl.Log4JLogger;
|
||||
import org.apache.hadoop.conf.Configuration;
|
||||
import org.apache.hadoop.hdfs.TestDFSClientRetries;
|
||||
import org.apache.hadoop.hdfs.server.namenode.web.resources.NamenodeWebHdfsMethods;
|
||||
import org.apache.log4j.Level;
|
||||
import org.junit.Test;
|
||||
|
||||
/** Test WebHdfsFileSystem retry on failures. */
|
||||
public class TestWebHdfsRetries {
|
||||
/** Test client retry with namenode restarting. */
|
||||
@Test
|
||||
public void testNamenodeRestart() throws Exception {
|
||||
((Log4JLogger)NamenodeWebHdfsMethods.LOG).getLogger().setLevel(Level.ALL);
|
||||
final Configuration conf = WebHdfsTestUtil.createConf();
|
||||
TestDFSClientRetries.namenodeRestartTest(conf, true);
|
||||
}
|
||||
}
|
||||
|
|
@ -79,13 +79,9 @@ public class WebHdfsTestUtil {
|
|||
return WebHdfsFileSystem.jsonParse(conn, false);
|
||||
}
|
||||
|
||||
public static HttpURLConnection twoStepWrite(HttpURLConnection conn,
|
||||
final HttpOpParam.Op op) throws IOException {
|
||||
conn.setRequestMethod(op.getType().toString());
|
||||
conn = WebHdfsFileSystem.twoStepWrite(conn, op);
|
||||
conn.setDoOutput(true);
|
||||
conn.connect();
|
||||
return conn;
|
||||
public static HttpURLConnection twoStepWrite(final WebHdfsFileSystem webhdfs,
|
||||
final HttpOpParam.Op op, HttpURLConnection conn) throws IOException {
|
||||
return webhdfs.new Runner(op, conn).twoStepWrite();
|
||||
}
|
||||
|
||||
public static FSDataOutputStream write(final WebHdfsFileSystem webhdfs,
|
||||
|
|
|
|||
Loading…
Reference in New Issue