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HDFS-9634. webhdfs client side exceptions don't provide enough details. Contributed by Eric Payne.

This commit is contained in:
Kihwal Lee 2016-01-20 13:18:25 -06:00
parent 446987e20a
commit 3616c7b855
3 changed files with 26 additions and 8 deletions
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17
hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/web/WebHdfsFileSystem.java
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@ -24,6 +24,7 @@ import java.io.EOFException;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.lang.reflect.InvocationTargetException;
import java.net.HttpURLConnection;
import java.net.InetSocketAddress;
import java.net.MalformedURLException;
@ -502,6 +503,7 @@ public class WebHdfsFileSystem extends FileSystem
new ExcludeDatanodesParam("");
private boolean checkRetry;
private String redirectHost;
protected AbstractRunner(final HttpOpParam.Op op, boolean redirected) {
this.op = op;
@ -553,7 +555,7 @@ public class WebHdfsFileSystem extends FileSystem
*/
protected HttpURLConnection connect(URL url) throws IOException {
//redirect hostname and port
String redirectHost = null;
redirectHost = null;
// resolve redirects for a DN operation unless already resolved
@ -658,6 +660,19 @@ public class WebHdfsFileSystem extends FileSystem
throw it;
}
} catch (IOException ioe) {
// Attempt to include the redirected node in the exception. If the
// attempt to recreate the exception fails, just use the original.
String node = redirectHost;
if (node == null) {
node = url.getAuthority();
}
try {
ioe = ioe.getClass().getConstructor(String.class)
.newInstance(node + ": " + ioe.getMessage());
} catch (NoSuchMethodException | SecurityException
| InstantiationException | IllegalAccessException
| IllegalArgumentException | InvocationTargetException e) {
}
shouldRetry(ioe, retry);
}
}

3
hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
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@ -2624,6 +2624,9 @@ Release 2.7.3 - UNRELEASED
HDFS-9569. Log the name of the fsimage being loaded for better
supportability. (Yongjun Zhang)
HDFS-9634. webhdfs client side exceptions don't provide enough details
(Eric Payne via kihwal)
OPTIMIZATIONS
BUG FIXES

14
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/web/TestWebHdfsTimeouts.java
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@ -115,7 +115,7 @@ public class TestWebHdfsTimeouts {
fs.listFiles(new Path("/"), false);
fail("expected timeout");
} catch (SocketTimeoutException e) {
assertEquals("connect timed out", e.getMessage());
assertEquals(fs.getUri().getAuthority() + ": connect timed out", e.getMessage());
}
}
@ -128,7 +128,7 @@ public class TestWebHdfsTimeouts {
fs.listFiles(new Path("/"), false);
fail("expected timeout");
} catch (SocketTimeoutException e) {
assertEquals("Read timed out", e.getMessage());
assertEquals(fs.getUri().getAuthority() + ": Read timed out", e.getMessage());
}
}
@ -143,7 +143,7 @@ public class TestWebHdfsTimeouts {
fs.getDelegationToken("renewer");
fail("expected timeout");
} catch (SocketTimeoutException e) {
assertEquals("connect timed out", e.getMessage());
assertEquals(fs.getUri().getAuthority() + ": connect timed out", e.getMessage());
}
}
@ -157,7 +157,7 @@ public class TestWebHdfsTimeouts {
fs.getDelegationToken("renewer");
fail("expected timeout");
} catch (SocketTimeoutException e) {
assertEquals("Read timed out", e.getMessage());
assertEquals(fs.getUri().getAuthority() + ": Read timed out", e.getMessage());
}
}
@ -172,7 +172,7 @@ public class TestWebHdfsTimeouts {
fs.getFileChecksum(new Path("/file"));
fail("expected timeout");
} catch (SocketTimeoutException e) {
assertEquals("connect timed out", e.getMessage());
assertEquals(fs.getUri().getAuthority() + ": connect timed out", e.getMessage());
}
}
@ -187,7 +187,7 @@ public class TestWebHdfsTimeouts {
fs.getFileChecksum(new Path("/file"));
fail("expected timeout");
} catch (SocketTimeoutException e) {
assertEquals("Read timed out", e.getMessage());
assertEquals(fs.getUri().getAuthority() + ": Read timed out", e.getMessage());
}
}
@ -203,7 +203,7 @@ public class TestWebHdfsTimeouts {
os = fs.create(new Path("/file"));
fail("expected timeout");
} catch (SocketTimeoutException e) {
assertEquals("connect timed out", e.getMessage());
assertEquals(fs.getUri().getAuthority() + ": connect timed out", e.getMessage());
} finally {
IOUtils.cleanup(LOG, os);
}