com.datastax.driver.core.TransportException: [/172.16.12.204:9042] Cannot connect

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This was a bug at HBase 1.0.1, it has been patched, so an update to 1.0.2 or further should solve the problem. URL for the Jira thread: https://goo.gl/c5oa6f

Solutions on the web

via DataStax JIRA by Benedict Adamson, 1 year ago
[/172.16.12.204:9042] Cannot connect
via GitHub by ziploc1010
, 2 years ago
[/52.23.252.148:9042] Cannot connect
via GitHub by ziploc1010
, 1 year ago
[/52.23.252.148:9042] Cannot connect
via Stack Overflow by Unknown author, 2 years ago
[test-host-2.example.com/172.16.12.202:9042] Cannot connect
via Stack Overflow by user3376961
, 2 years ago
via Stack Overflow by RafaelTSCS
, 2 years ago
com.datastax.driver.core.TransportException: [/172.16.12.204:9042] Cannot connect
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:739)
at org.jboss.netty.channel.socket.nio.NioClientBoss.connect(NioClientBoss.java:150)
at org.jboss.netty.channel.socket.nio.NioClientBoss.processSelectedKeys(NioClientBoss.java:105)
at org.jboss.netty.channel.socket.nio.NioClientBoss.process(NioClientBoss.java:79)
at org.jboss.netty.channel.socket.nio.AbstractNioSelector.run(AbstractNioSelector.java:318)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)

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