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HADOOP-15090. Add ADL troubleshooting doc. 

Contributed by Steve Loughran.

(cherry picked from commit 58a2120e8a)
This commit is contained in:
Steve Loughran 2018-02-15 14:26:00 +00:00
parent 6ea7d78ccb
commit c9a373fb14
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hadoop-tools/hadoop-azure-datalake/src/site/markdown/index.md
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@ -22,6 +22,10 @@ The `hadoop-azure-datalake` module provides support for integration with the
[Azure Data Lake Store](https://azure.microsoft.com/en-in/documentation/services/data-lake-store/).
This support comes via the JAR file `azure-datalake-store.jar`.
### Related Documents
* [Troubleshooting](troubleshooting_adl.html).
## Features
* Read and write data stored in an Azure Data Lake Storage account.

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<!---
Licensed 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. See accompanying LICENSE file.
-->
# Troubleshooting ADL
<!-- MACRO{toc|fromDepth=1|toDepth=3} -->
## Error messages
### Error fetching access token:
You aren't authenticated.
### Error fetching access token: JsonParseException
This means a problem talking to the oauth endpoint.
```
Operation null failed with exception com.fasterxml.jackson.core.JsonParseException : Unexpected character ('<' (code 60)): expected a valid value (number, String, array, object, 'true', 'false' or 'null')
at [Source: sun.net.www.protocol.http.HttpURLConnection$HttpInputStream@211d30ed; line: 3, column: 2]
Last encountered exception thrown after 5 tries. [com.fasterxml.jackson.core.JsonParseException,com.fasterxml.jackson.core.JsonParseException,com.fasterxml.jackson.core.JsonParseException,com.fasterxml.jackson.core.JsonParseException,com.fasterxml.jackson.core.JsonParseException]
[ServerRequestId:null]
at com.microsoft.azure.datalake.store.ADLStoreClient.getExceptionFromResponse(ADLStoreClient.java:1147)
at com.microsoft.azure.datalake.store.ADLStoreClient.getDirectoryEntry(ADLStoreClient.java:725)
at org.apache.hadoop.fs.adl.AdlFileSystem.getFileStatus(AdlFileSystem.java:476)
at org.apache.hadoop.fs.FileSystem.exists(FileSystem.java:1713)
at org.apache.hadoop.fs.contract.ContractTestUtils.rm(ContractTestUtils.java:397)
at org.apache.hadoop.fs.contract.ContractTestUtils.cleanup(ContractTestUtils.java:374)
at org.apache.hadoop.fs.contract.AbstractFSContractTestBase.deleteTestDirInTeardown(AbstractFSContractTestBase.java:213)
at org.apache.hadoop.fs.contract.AbstractFSContractTestBase.teardown(AbstractFSContractTestBase.java:204)
at org.apache.hadoop.fs.contract.AbstractContractOpenTest.teardown(AbstractContractOpenTest.java:64)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:33)
at org.junit.rules.TestWatcher$1.evaluate(TestWatcher.java:55)
at org.junit.internal.runners.statements.FailOnTimeout$StatementThread.run(FailOnTimeout.java:74)
```
The endpoint for token refresh is wrong; the web site at the far end is returning HTML, which breaks the JSON parser.
Fix: get the right endpoint from the web UI; make sure it ends in `oauth2/token`.
If there is a proxy betwen the application and ADL, make sure that the JVM proxy
settings are correct.
### `UnknownHostException : yourcontainer.azuredatalakestore.net`
The name of the ADL container is wrong, and does not resolve to any known container.
```
Operation MKDIRS failed with exception java.net.UnknownHostException : yourcontainer.azuredatalakestore.net
Last encountered exception thrown after 5 tries. [java.net.UnknownHostException,java.net.UnknownHostException,java.net.UnknownHostException,java.net.UnknownHostException,java.net.UnknownHostException]
[ServerRequestId:null]
at com.microsoft.azure.datalake.store.ADLStoreClient.getExceptionFromResponse(ADLStoreClient.java:1147)
at com.microsoft.azure.datalake.store.ADLStoreClient.createDirectory(ADLStoreClient.java:582)
at org.apache.hadoop.fs.adl.AdlFileSystem.mkdirs(AdlFileSystem.java:598)
at org.apache.hadoop.fs.FileSystem.mkdirs(FileSystem.java:2305)
at org.apache.hadoop.fs.contract.AbstractFSContractTestBase.mkdirs(AbstractFSContractTestBase.java:338)
at org.apache.hadoop.fs.contract.AbstractFSContractTestBase.setup(AbstractFSContractTestBase.java:193)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:24)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
at org.junit.rules.TestWatcher$1.evaluate(TestWatcher.java:55)
at org.junit.internal.runners.statements.FailOnTimeout$StatementThread.run(FailOnTimeout.java:74)
Caused by: java.net.UnknownHostException: yourcontainer.azuredatalakestore.net
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:184)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
at java.net.Socket.connect(Socket.java:589)
at sun.security.ssl.SSLSocketImpl.connect(SSLSocketImpl.java:668)
at sun.net.NetworkClient.doConnect(NetworkClient.java:175)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:432)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:527)
at sun.net.www.protocol.https.HttpsClient.<init>(HttpsClient.java:264)
at sun.net.www.protocol.https.HttpsClient.New(HttpsClient.java:367)
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient(AbstractDelegateHttpsURLConnection.java:191)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1138)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:1032)
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:177)
at sun.net.www.protocol.http.HttpURLConnection.getOutputStream0(HttpURLConnection.java:1316)
at sun.net.www.protocol.http.HttpURLConnection.getOutputStream(HttpURLConnection.java:1291)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.getOutputStream(HttpsURLConnectionImpl.java:250)
at com.microsoft.azure.datalake.store.HttpTransport.makeSingleCall(HttpTransport.java:273)
at com.microsoft.azure.datalake.store.HttpTransport.makeCall(HttpTransport.java:91)
at com.microsoft.azure.datalake.store.Core.mkdirs(Core.java:399)
at com.microsoft.azure.datalake.store.ADLStoreClient.createDirectory(ADLStoreClient.java:580)
... 15 more
```
### ACL verification failed
You are logged in but have no access to the ADL container.
```
[ERROR] testOpenReadZeroByteFile(org.apache.hadoop.fs.adl.live.TestAdlContractOpenLive) Time elapsed: 3.392 s <<< ERROR!
org.apache.hadoop.security.AccessControlException: MKDIRS failed with error 0x83090aa2 (Forbidden. ACL verification failed. Either the resource does not exist or the user is not authorized to perform the requested operation.). [709ad9f6-725f-45a8-8231-e9327c52e79f][2017-11-28T07:06:30.3068084-08:00] [ServerRequestId:709ad9f6-725f-45a8-8231-e9327c52e79f]
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at com.microsoft.azure.datalake.store.ADLStoreClient.getRemoteException(ADLStoreClient.java:1167)
at com.microsoft.azure.datalake.store.ADLStoreClient.getExceptionFromResponse(ADLStoreClient.java:1132)
at com.microsoft.azure.datalake.store.ADLStoreClient.createDirectory(ADLStoreClient.java:582)
at org.apache.hadoop.fs.adl.AdlFileSystem.mkdirs(AdlFileSystem.java:598)
at org.apache.hadoop.fs.FileSystem.mkdirs(FileSystem.java:2305)
at org.apache.hadoop.fs.contract.AbstractFSContractTestBase.mkdirs(AbstractFSContractTestBase.java:338)
at org.apache.hadoop.fs.contract.AbstractFSContractTestBase.setup(AbstractFSContractTestBase.java:193)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:24)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
at org.junit.rules.TestWatcher$1.evaluate(TestWatcher.java:55)
at org.junit.internal.runners.statements.FailOnTimeout$StatementThread.run(FailOnTimeout.java:74)
```
See "Adding the service principal to your ADL Account".