Cannot connect to Zookeeper when running a mapreduce job - hadoop

Question

I am running a map reduce job using an Accumulo table as input and storing the data in another table in Accumulo. This is the run method
public int run(String[] args) throws Exception {
Opts opts = new Opts();
opts.parseArgs(PivotTable.class.getName(), args);
Configuration conf = getConf();
conf.set("formula", opts.formula);
Job job = Job.getInstance(conf);
job.setJobName("Pivot Table Generation");
job.setJarByClass(PivotTable.class);
job.setOutputKeyClass(Text.class);
job.setOutputValueClass(Text.class);
job.setMapperClass(PivotTableMapper.class);
job.setCombinerClass(PivotTableCombiber.class);
job.setReducerClass(PivotTableReducer.class);
AccumuloInputFormat.setInputTableName(job, opts.dataTable);
BatchWriterConfig bwConfig = new BatchWriterConfig();
AccumuloOutputFormat.setBatchWriterOptions(job, bwConfig);
AccumuloOutputFormat.setDefaultTableName(job, opts.pivotTable);
AccumuloOutputFormat.setCreateTables(job, true);
job.setInputFormatClass(AccumuloInputFormat.class);
job.setOutputFormatClass(AccumuloOutputFormat.class);
opts.setAccumuloConfigs(job);
return job.waitForCompletion(true) ? 0 : 1;
}
The problem though is that when I run the job, I get an exception that says that it cannot connect to zookeeper.
Error: java.lang.RuntimeException: Failed to connect to zookeeper (zookeeper.1:22181) within 2x zookeeper timeout period 30000
at org.apache.accumulo.fate.zookeeper.ZooSession.connect(ZooSession.java:124)
at org.apache.accumulo.fate.zookeeper.ZooSession.getSession(ZooSession.java:164)
at org.apache.accumulo.fate.zookeeper.ZooReader.getSession(ZooReader.java:43)
at org.apache.accumulo.fate.zookeeper.ZooReader.getZooKeeper(ZooReader.java:47)
at org.apache.accumulo.fate.zookeeper.ZooCache.getZooKeeper(ZooCache.java:59)
at org.apache.accumulo.fate.zookeeper.ZooCache.retry(ZooCache.java:159)
at org.apache.accumulo.fate.zookeeper.ZooCache.get(ZooCache.java:289)
at org.apache.accumulo.fate.zookeeper.ZooCache.get(ZooCache.java:238)
at org.apache.accumulo.core.client.ZooKeeperInstance.getInstanceID(ZooKeeperInstance.java:169)
at org.apache.accumulo.core.client.ZooKeeperInstance.<init>(ZooKeeperInstance.java:159)
at org.apache.accumulo.core.client.ZooKeeperInstance.<init>(ZooKeeperInstance.java:140)
at org.apache.accumulo.core.client.mapreduce.RangeInputSplit.getInstance(RangeInputSplit.java:364)
at org.apache.accumulo.core.client.mapreduce.AbstractInputFormat$AbstractRecordReader.initialize(AbstractInputFormat.java:495)
at org.apache.hadoop.mapred.MapTask$NewTrackingRecordReader.initialize(MapTask.java:548)
at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:786)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:341)
at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:164)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:422)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1657)
at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:158)
I checked to see if zookeeper was up and it was running. I ran telnet to see if the port was up and it was up.
I am using $ACCUMULO_HOME/bin/tool.sh to run the job. Any help would be appreciated.

Answer 1

It was an issue with the hosts file in my hadoop slaves. The hostname mappings were not correct.