疑難排解 ADL

錯誤訊息

擷取存取權杖時發生錯誤

您尚未驗證身分。

擷取存取權杖時發生錯誤：JsonParseException

這表示與 oauth 端點通訊時發生問題。

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)

權杖更新端點錯誤；遠端網站傳回 HTML，這會中斷 JSON 剖析器。修正：從 Web UI 取得正確的端點；確保它以 oauth2/token 結尾。

如果應用程式和 ADL 之間有代理伺服器，請確保 JVM 代理伺服器設定正確。

UnknownHostException : yourcontainer.azuredatalakestore.net

ADL 容器名稱錯誤，無法解析為任何已知容器。

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 驗證失敗

您已登入，但無法存取 ADL 容器。

[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)

請參閱「將服務主體新增至 ADL 帳戶」。

逾時

ADL SDK 使用的逾時時間可以透過 Hadoop 屬性 adl.http.timeout 覆寫。某些運算架構中的逾時時間可能需要透過降低 SDK 使用的逾時時間來解決。儲存層中較短的逾時時間可能會允許嘗試更多次重試，並在觸及架構的逾時時間之前實際增加成功機率，因為最終可能會失敗的嘗試會更快失敗。

SSL Socket Channel 模式

ADL SDK 預設會嘗試透過 OpenSSL 建立安全的 Socket 連線，因為它們比 Https 提供顯著的效能提升。如果有執行時期問題，SDK 預設會透過 Default_JSE 建立連線。這可以使用 Hadoop 屬性 adl.ssl.channel.mode 覆寫。此組態的可能值為 OpenSSL、Default_JSE 和 Default (預設)。將組態設定為 OpenSSL 或 Default_JSE 會嘗試僅以該模式連線。