HADOOP-15090. Add ADL troubleshooting doc.

Contributed by Steve Loughran.
This commit is contained in:
Steve Loughran 2018-02-15 14:24:36 +00:00
parent bfdf99eb35
commit 58a2120e8a
2 changed files with 150 additions and 0 deletions

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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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@ -0,0 +1,146 @@
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# 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".