zhao jintao created KYLIN-3891:
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             Summary: Kylin jdbc throws NoHttpResponseException
                 Key: KYLIN-3891
                 URL: https://issues.apache.org/jira/browse/KYLIN-3891
             Project: Kylin
          Issue Type: Bug
          Components: Driver - JDBC
    Affects Versions: v2.5.2
         Environment: Huawei FusionInsight
            Reporter: zhao jintao


Hi Team;

When I use kylin jdbc, I find that jdbc throws NoHttpResponseException. 
Then I  do jdbc test cases in "DriverTest.java", I use one jdbc connection 
query 20 times, each time first wait 20 minutes. Unfortunately, I also find 
that jdbc also throws NoHttpResponseException.

This is my test code:

        try {
            for (int j = 0; j < 20; j++) {
                Thread.sleep(1000*20);
                Statement state = conn.createStatement();
                ResultSet resultSet = state.executeQuery("select count(*) from 
KYLIN_SALES ;");
                printResultSetMetaData(resultSet);
                printResultSet(resultSet);
                resultSet.close();
            }
        } catch (InterruptedException e){
            e.printStackTrace();
        }

This is NoHttpResponseException: 


java.sql.SQLException: Error while executing SQL "select count(*) from 
KYLIN_SALES ;": java.sql.SQLException: org.apache.http.NoHttpResponseException: 
The target server failed to respond

        at org.apache.calcite.avatica.Helper.createException(Helper.java:56)
        at org.apache.calcite.avatica.Helper.createException(Helper.java:41)
        at 
org.apache.calcite.avatica.AvaticaStatement.executeInternal(AvaticaStatement.java:156)
        at 
org.apache.calcite.avatica.AvaticaStatement.executeQuery(AvaticaStatement.java:218)
        at org.apache.kylin.jdbc.DriverTest.testHttpClient(DriverTest.java:299)
        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:50)
        at 
org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
        at 
org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
        at 
org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
        at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
        at 
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
        at 
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
        at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
        at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
        at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
        at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
        at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
        at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
        at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
        at 
com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
        at 
com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
        at 
com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
        at 
com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
Caused by: java.lang.RuntimeException: java.sql.SQLException: 
org.apache.http.NoHttpResponseException: The target server failed to respond
        at org.apache.kylin.jdbc.KylinMeta.prepareAndExecute(KylinMeta.java:115)
        at 
org.apache.calcite.avatica.AvaticaConnection.prepareAndExecuteInternal(AvaticaConnection.java:638)
        at 
org.apache.calcite.avatica.AvaticaStatement.executeInternal(AvaticaStatement.java:149)
        ... 24 more
Caused by: java.sql.SQLException: org.apache.http.NoHttpResponseException: The 
target server failed to respond
        at org.apache.kylin.jdbc.KylinResultSet.execute(KylinResultSet.java:71)
        at 
org.apache.calcite.avatica.AvaticaConnection$1.execute(AvaticaConnection.java:630)
        at org.apache.kylin.jdbc.KylinMeta.prepareAndExecute(KylinMeta.java:111)
        ... 26 more
Caused by: org.apache.http.NoHttpResponseException: The target server failed to 
respond
        at 
org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:95)
        at 
org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:62)
        at 
org.apache.http.impl.io.AbstractMessageParser.parse(AbstractMessageParser.java:254)
        at 
org.apache.http.impl.AbstractHttpClientConnection.receiveResponseHeader(AbstractHttpClientConnection.java:289)
        at 
org.apache.http.impl.conn.DefaultClientConnection.receiveResponseHeader(DefaultClientConnection.java:252)
        at 
org.apache.http.impl.conn.ManagedClientConnectionImpl.receiveResponseHeader(ManagedClientConnectionImpl.java:191)
        at 
org.apache.http.protocol.HttpRequestExecutor.doReceiveResponse(HttpRequestExecutor.java:300)
        at 
org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:127)
        at 
org.apache.http.impl.client.DefaultRequestDirector.tryExecute(DefaultRequestDirector.java:715)
        at 
org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:520)
        at 
org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:906)
        at 
org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:805)
        at 
org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:784)
        at 
org.apache.kylin.jdbc.KylinClient.executeKylinQuery(KylinClient.java:407)
        at org.apache.kylin.jdbc.KylinClient.executeQuery(KylinClient.java:363)
        at org.apache.kylin.jdbc.KylinResultSet.execute(KylinResultSet.java:69)
        ... 28 more


Process finished with exit code -1




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