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04-03-2019
06:46 AM
Hi @Jay Kumar SenSharma, Please look into the below ambari-server.log The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.GeneratedConstructorAccessor40.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) at com.mysql.cj.NativeSession.connect(NativeSession.java:152) at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:955) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:825) ... 12 more Caused by: java.net.ConnectException: Connection refused (Connection refused) at java.net.PlainSocketImpl.socketConnect(Native Method) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:589) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 15 more
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04-01-2019
02:13 PM
Hi @Jay Kumar SenSharma, Please have a look at below attached output. root@hdfs1:~# grep 'jdbc' /etc/ambari-server/conf/ambari.properties custom.mysql.jdbc.name=mysql-connector-java-8.0.15.jar previous.custom.mysql.jdbc.name=mysql-connector-java-8.0.15.jar server.jdbc.connection-pool=c3p0 server.jdbc.connection-pool.acquisition-size=5 server.jdbc.connection-pool.idle-test-interval=7200 server.jdbc.connection-pool.max-age=0 server.jdbc.connection-pool.max-idle-time=14400 server.jdbc.connection-pool.max-idle-time-excess=0 server.jdbc.database=mysql server.jdbc.database_name=ambu server.jdbc.driver=com.mysql.jdbc.Driver server.jdbc.driver.path=/usr/share/java/mysql-connector-java-8.0.15.jar server.jdbc.hostname=hdfs1.hadoop.com server.jdbc.port=3306 server.jdbc.postgres.schema=ambari server.jdbc.rca.driver=com.mysql.jdbc.Driver server.jdbc.rca.url=jdbc:mysql://hdfs1.hadoop.com:3306/ambu server.jdbc.rca.user.name=root server.jdbc.rca.user.passwd=/etc/ambari-server/conf/password.dat server.jdbc.url=jdbc:mysql://hdfs1.hadoop.com:3306/ambu server.jdbc.user.name=root server.jdbc.user.passwd=/etc/ambari-server/conf/password.dat root@hdfs1:~# telnet 172.24.133.86 3306 Trying 172.24.133.86... telnet: Unable to connect to remote host: Connection refused root@hdfs1:~# root@hdfs1:~# nc -v 172.24.133.86 3306 nc: connect to 172.24.133.86 port 3306 (tcp) failed: Connection refused root@hdfs1:~# root@hdfs1:~# /usr/jdk64/jdk1.8.0_112/bin/java -cp /var/lib/ambari-server/resources/DBConnectionVerification.jar:/usr/share/java/mysql-connector-java-8.0.15.jar org.apache.ambari.server.DBConnectionVerification "jdbc:mysql://hdfs1.hadoop.com.com/ambari" "ambu" "password" com.mysql.jdbc.Driver Loading class `com.mysql.jdbc.Driver'. This is deprecated. The new driver class is `com.mysql.cj.jdbc.Driver'. The driver is automatically registered via the SPI and manual loading of the driver class is generally unnecessary.
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04-01-2019
02:13 PM
Hi @ Jay Kumar SenSharma ,Thanks much for your reply and i did all things what ever you said above but still am getting same error when start ambari serever.
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04-01-2019
02:13 PM
Hi, when i start the ambari-server getting error , please look at logs fro more info. Caused by: java.net.ConnectException: Connection refused (Connection refused) at java.net.PlainSocketImpl.socketConnect(Native Method) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:589) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 15 more
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04-01-2019
08:23 AM
Hi @Jay Kumar SenSharma , Thanks much for your reply,i did all things which ever you said above,but still am getting same error.when i start the ambari server.
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04-01-2019
06:47 AM
Hi, When start the ambari-server getting error ,please look at logs for more info Caused by: java.net.ConnectException: Connection refused (Connection refused) at java.net.PlainSocketImpl.socketConnect(Native Method) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:589) at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155) at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ... 15 more
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04-01-2019
06:47 AM
Hi All, I am getting this alert: java.lang.OutOfMemoryError: Java heap space 19/03/31 02:24:13 WARN AbstractChannelHandlerContext: An exception 'java.lang.OutOfMemoryError: Java heap space' [enable DEBUG level for full stacktrace] was thrown by a user handler's exceptionCaught() method while handling the following exception WARN TransportChannelHandler: Exception in connection from hostname/ipaddress:7077 java.lang.OutOfMemoryError: Java heap space afetr restarting the service it will work fine but again it will fail after some time.i need to fix it permanently.please help me in this.thanks in advance.
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03-29-2019
11:14 PM
i am also getting same error..please look into log The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
at sun.reflect.GeneratedConstructorAccessor41.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91)
at com.mysql.cj.NativeSession.connect(NativeSession.java:152)
at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:955)
at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:825)
... 12 more
Caused by: java.net.ConnectException: Connection refused (Connection refused)
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
at java.net.Socket.connect(Socket.java:589)
at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155)
at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65)
... 15 more @
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03-29-2019
07:43 PM
i am also getting same error..please look into log The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
at sun.reflect.GeneratedConstructorAccessor41.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91)
at com.mysql.cj.NativeSession.connect(NativeSession.java:152)
at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:955)
at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:825)
... 12 more
Caused by: java.net.ConnectException: Connection refused (Connection refused)
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
at java.net.Socket.connect(Socket.java:589)
at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155)
at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65)
... 15 more @
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03-12-2019
09:01 AM
how to take hdfs namenode back up on plain venilla apache environment can any one send those steps please
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02-08-2019
05:35 AM
Hi @Geoffrey Shelton Okot Thank you for your valuable reply. Can you please send me a document for Ambari installation on ubuntu.
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02-07-2019
07:32 AM
@Hariprasanth Madhavan Thanks for u r reply.i ran that command but still its showing size.
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02-06-2019
06:09 AM
Thanks much @ Jay Kumar SenSharma
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02-06-2019
05:31 AM
can any one please send me the ambari installation document on ubuntu
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02-06-2019
05:28 AM
hi can you please send step by step document for ambari installation on ubuntu
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