Hello Josh, thank you for your quick answer. I did all the steps again, including the init for accumulo and this time the NPE disappeared. I think it's because I did the init again properly. I can still not access the HTTP service of the monitor in the browser, but this time I think the monitor's log is more telling.
Ok, here's what I did. (1) start-dfs.sh (2.1) check that HDFS is running jps gives: 6070 Jps 5407 DataNode 5240 NameNode 5609 SecondaryNameNode (2.2) check that HDFS is writable hadoop fs -rm -r -f /accumulo hadoop fs -ls / (shows nothing there anymore, so empty HDFS) hadoop fs -mkdir /testDir hadoop fs -ls / drwxr-xr-x - ubuntu supergroup 0 2015-07-06 05:42 /testDir hadoop fs -put someTestFile.txt /testDir hadoop fs -ls /testDir Found 1 items -rw-r--r-- 1 ubuntu supergroup 12 2015-07-06 05:43 /testDir/someTestFile.txt hadoop fs -rm -r -f /testDir hadoop fs -ls / (shows nothing there anymore) (3) start zookeeper and check it’s running zkServer.sh start jps 5407 DataNode 5240 NameNode 5609 SecondaryNameNode 6109 Jps -m 6025 QuorumPeerMain (4) initialize accumulo accumulo init (5) start accumulo start-all.sh (6) jps -m gives 6654 Main tracer --address localhost 6895 Jps -m 5407 DataNode 5240 NameNode 6525 Main master --address localhost 6268 Main monitor --address 0.0.0.0 5609 SecondaryNameNode 6595 Main gc --address localhost 6355 Main tserver --address localhost 6025 QuorumPeerMain /home/ubuntu/zookeeper-3.4.6/bin/../conf/zoo.cfg (6) netstat -tapen | grep ":50095” gives tcp 0 0 0.0.0.0:50095 0.0.0.0:* LISTEN 1000 42507 6268/java Attached are all relevant logs (I replaced the actual IP of the EC2 instance by XXX). master.log <http://apache-accumulo.1065345.n5.nabble.com/file/n14626/master.log> monitor.log <http://apache-accumulo.1065345.n5.nabble.com/file/n14626/monitor.log> tracer.log <http://apache-accumulo.1065345.n5.nabble.com/file/n14626/tracer.log> tserver.log <http://apache-accumulo.1065345.n5.nabble.com/file/n14626/tserver.log> gc.log <http://apache-accumulo.1065345.n5.nabble.com/file/n14626/gc.log> -- View this message in context: http://apache-accumulo.1065345.n5.nabble.com/Accumulo-starting-up-but-NPE-in-logs-and-can-t-access-monitor-in-browser-tp14624p14626.html Sent from the Users mailing list archive at Nabble.com.
