Hi Simone, If you don't want to wait, you could also revert these commits and rebuild:
git revert 5b9872492394026f3e6ac31b9937141ebedb1481 git revert 707606ac40dbbbd497fcbbb5442870fec5468bf3 git revert 003ce18efc0249fae874e56c3df6acf19f5f2429 This will remove the newly added metrics reporting features. Cheers, Max On Wed, May 25, 2016 at 3:11 PM, Simone Robutti <simone.robu...@radicalbit.io> wrote: > Ok, I will wait then. > > Thank you. > > 2016-05-25 15:06 GMT+02:00 Stephan Ewen <se...@apache.org>: > >> Hi! >> >> This can be an issue in the latest master (because the test infrastructure >> was broken, it was not detected) >> https://issues.apache.org/jira/browse/FLINK-3962 >> >> Will be fixed soon. >> >> Stephan >> >> >> On Wed, May 25, 2016 at 2:22 PM, Simone Robutti < >> simone.robu...@radicalbit.io> wrote: >> >> > Running a job I encounter the following error that leads the job to >> failure >> > in the end. >> > >> > 14:09:34,722 ERROR org.apache.flink.metrics.reporter.JMXReporter >> > - A metric with the name >> > >> > >> org.apache.flink.metrics:key0=localhost,key1=taskmanager,key2=04a8fea67d01fbbdab5bba8c7e9a73d8,key3=Flink_Java_Job_at_Wed_May_25_14-09-14_CEST_2016,key4=<task_name>,name=numBytesIn >> > was already registered. >> > javax.management.InstanceAlreadyExistsException: >> > >> > >> org.apache.flink.metrics:key0=localhost,key1=taskmanager,key2=04a8fea67d01fbbdab5bba8c7e9a73d8,key3=Flink_Java_Job_at_Wed_May_25_14-09-14_CEST_2016,key4=<task_name>,name=numBytesIn >> > at com.sun.jmx.mbeanserver.Repository.addMBean(Repository.java:437) >> > at >> > >> > >> com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerWithRepository(DefaultMBeanServerInterceptor.java:1898) >> > at >> > >> > >> com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerDynamicMBean(DefaultMBeanServerInterceptor.java:966) >> > at >> > >> > >> com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerObject(DefaultMBeanServerInterceptor.java:900) >> > at >> > >> > >> com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerMBean(DefaultMBeanServerInterceptor.java:324) >> > at >> > >> > >> com.sun.jmx.mbeanserver.JmxMBeanServer.registerMBean(JmxMBeanServer.java:522) >> > at >> > >> > >> org.apache.flink.metrics.reporter.JMXReporter.notifyOfAddedMetric(JMXReporter.java:76) >> > at >> > org.apache.flink.metrics.MetricRegistry.register(MetricRegistry.java:177) >> > at >> > >> > >> org.apache.flink.metrics.groups.AbstractMetricGroup.addMetric(AbstractMetricGroup.java:191) >> > at >> > >> > >> org.apache.flink.metrics.groups.AbstractMetricGroup.counter(AbstractMetricGroup.java:144) >> > at >> > >> org.apache.flink.metrics.groups.IOMetricGroup.<init>(IOMetricGroup.java:40) >> > at >> > >> > >> org.apache.flink.metrics.groups.TaskMetricGroup.<init>(TaskMetricGroup.java:68) >> > at >> > >> > >> org.apache.flink.metrics.groups.JobMetricGroup.addTask(JobMetricGroup.java:74) >> > at >> > >> > >> org.apache.flink.metrics.groups.TaskManagerMetricGroup.addTaskForJob(TaskManagerMetricGroup.java:86) >> > at >> > >> > >> org.apache.flink.runtime.taskmanager.TaskManager.submitTask(TaskManager.scala:1092) >> > at org.apache.flink.runtime.taskmanager.TaskManager.org >> > >> > >> $apache$flink$runtime$taskmanager$TaskManager$$handleTaskMessage(TaskManager.scala:441) >> > at >> > >> > >> org.apache.flink.runtime.taskmanager.TaskManager$$anonfun$handleMessage$1.applyOrElse(TaskManager.scala:283) >> > at >> > >> > >> scala.runtime.AbstractPartialFunction$mcVL$sp.apply$mcVL$sp(AbstractPartialFunction.scala:33) >> > at >> > >> > >> scala.runtime.AbstractPartialFunction$mcVL$sp.apply(AbstractPartialFunction.scala:33) >> > at >> > >> > >> scala.runtime.AbstractPartialFunction$mcVL$sp.apply(AbstractPartialFunction.scala:25) >> > at >> > >> > >> org.apache.flink.runtime.LeaderSessionMessageFilter$$anonfun$receive$1.applyOrElse(LeaderSessionMessageFilter.scala:36) >> > at >> > >> > >> scala.runtime.AbstractPartialFunction$mcVL$sp.apply$mcVL$sp(AbstractPartialFunction.scala:33) >> > at >> > >> > >> scala.runtime.AbstractPartialFunction$mcVL$sp.apply(AbstractPartialFunction.scala:33) >> > at >> > >> > >> scala.runtime.AbstractPartialFunction$mcVL$sp.apply(AbstractPartialFunction.scala:25) >> > at >> org.apache.flink.runtime.LogMessages$$anon$1.apply(LogMessages.scala:33) >> > at >> org.apache.flink.runtime.LogMessages$$anon$1.apply(LogMessages.scala:28) >> > at scala.PartialFunction$class.applyOrElse(PartialFunction.scala:118) >> > at >> > >> > >> org.apache.flink.runtime.LogMessages$$anon$1.applyOrElse(LogMessages.scala:28) >> > at akka.actor.Actor$class.aroundReceive(Actor.scala:465) >> > at >> > >> > >> org.apache.flink.runtime.taskmanager.TaskManager.aroundReceive(TaskManager.scala:124) >> > at akka.actor.ActorCell.receiveMessage(ActorCell.scala:516) >> > at akka.actor.ActorCell.invoke(ActorCell.scala:487) >> > at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:254) >> > at akka.dispatch.Mailbox.run(Mailbox.scala:221) >> > at akka.dispatch.Mailbox.exec(Mailbox.scala:231) >> > at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260) >> > at >> > >> > >> scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339) >> > at >> scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979) >> > at >> > >> > >> scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107) >> > 14:09:34,728 ERROR org.apache.flink.metrics.reporter.JMXReporter >> > - A metric with the name >> > >> > >> org.apache.flink.metrics:key0=localhost,key1=taskmanager,key2=04a8fea67d01fbbdab5bba8c7e9a73d8,key3=Flink_Java_Job_at_Wed_May_25_14-09-14_CEST_2016,key4=<task_name>,name=numBytesOut >> > was already registered. >> > javax.management.InstanceAlreadyExistsException: >> > >> > >> org.apache.flink.metrics:key0=localhost,key1=taskmanager,key2=04a8fea67d01fbbdab5bba8c7e9a73d8,key3=Flink_Java_Job_at_Wed_May_25_14-09-14_CEST_2016,key4=<task_name>,name=numBytesOut >> > at com.sun.jmx.mbeanserver.Repository.addMBean(Repository.java:437) >> > at >> > >> > >> com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerWithRepository(DefaultMBeanServerInterceptor.java:1898) >> > at >> > >> > >> com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerDynamicMBean(DefaultMBeanServerInterceptor.java:966) >> > at >> > >> > >> com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerObject(DefaultMBeanServerInterceptor.java:900) >> > at >> > >> > >> com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerMBean(DefaultMBeanServerInterceptor.java:324) >> > at >> > >> > >> com.sun.jmx.mbeanserver.JmxMBeanServer.registerMBean(JmxMBeanServer.java:522) >> > at >> > >> > >> org.apache.flink.metrics.reporter.JMXReporter.notifyOfAddedMetric(JMXReporter.java:76) >> > at >> > org.apache.flink.metrics.MetricRegistry.register(MetricRegistry.java:177) >> > at >> > >> > >> org.apache.flink.metrics.groups.AbstractMetricGroup.addMetric(AbstractMetricGroup.java:191) >> > at >> > >> > >> org.apache.flink.metrics.groups.AbstractMetricGroup.counter(AbstractMetricGroup.java:144) >> > at >> > >> org.apache.flink.metrics.groups.IOMetricGroup.<init>(IOMetricGroup.java:41) >> > at >> > >> > >> org.apache.flink.metrics.groups.TaskMetricGroup.<init>(TaskMetricGroup.java:68) >> > at >> > >> > >> org.apache.flink.metrics.groups.JobMetricGroup.addTask(JobMetricGroup.java:74) >> > at >> > >> > >> org.apache.flink.metrics.groups.TaskManagerMetricGroup.addTaskForJob(TaskManagerMetricGroup.java:86) >> > at >> > >> > >> org.apache.flink.runtime.taskmanager.TaskManager.submitTask(TaskManager.scala:1092) >> > at org.apache.flink.runtime.taskmanager.TaskManager.org >> > >> > >> $apache$flink$runtime$taskmanager$TaskManager$$handleTaskMessage(TaskManager.scala:441) >> > at >> > >> > >> org.apache.flink.runtime.taskmanager.TaskManager$$anonfun$handleMessage$1.applyOrElse(TaskManager.scala:283) >> > at >> > >> > >> scala.runtime.AbstractPartialFunction$mcVL$sp.apply$mcVL$sp(AbstractPartialFunction.scala:33) >> > at >> > >> > >> scala.runtime.AbstractPartialFunction$mcVL$sp.apply(AbstractPartialFunction.scala:33) >> > at >> > >> > >> scala.runtime.AbstractPartialFunction$mcVL$sp.apply(AbstractPartialFunction.scala:25) >> > at >> > >> > >> org.apache.flink.runtime.LeaderSessionMessageFilter$$anonfun$receive$1.applyOrElse(LeaderSessionMessageFilter.scala:36) >> > at >> > >> > >> scala.runtime.AbstractPartialFunction$mcVL$sp.apply$mcVL$sp(AbstractPartialFunction.scala:33) >> > at >> > >> > >> scala.runtime.AbstractPartialFunction$mcVL$sp.apply(AbstractPartialFunction.scala:33) >> > at >> > >> > >> scala.runtime.AbstractPartialFunction$mcVL$sp.apply(AbstractPartialFunction.scala:25) >> > at >> org.apache.flink.runtime.LogMessages$$anon$1.apply(LogMessages.scala:33) >> > at >> org.apache.flink.runtime.LogMessages$$anon$1.apply(LogMessages.scala:28) >> > at scala.PartialFunction$class.applyOrElse(PartialFunction.scala:118) >> > at >> > >> > >> org.apache.flink.runtime.LogMessages$$anon$1.applyOrElse(LogMessages.scala:28) >> > at akka.actor.Actor$class.aroundReceive(Actor.scala:465) >> > at >> > >> > >> org.apache.flink.runtime.taskmanager.TaskManager.aroundReceive(TaskManager.scala:124) >> > at akka.actor.ActorCell.receiveMessage(ActorCell.scala:516) >> > at akka.actor.ActorCell.invoke(ActorCell.scala:487) >> > at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:254) >> > at akka.dispatch.Mailbox.run(Mailbox.scala:221) >> > at akka.dispatch.Mailbox.exec(Mailbox.scala:231) >> > at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260) >> > at >> > >> > >> scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339) >> > at >> scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979) >> > at >> > >> > >> scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107) >> > 14:09:34,730 ERROR org.apache.flink.metrics.reporter.JMXReporter >> > - A metric with the name >> > >> > >> org.apache.flink.metrics:key0=localhost,key1=taskmanager,key2=04a8fea67d01fbbdab5bba8c7e9a73d8,key3=Flink_Java_Job_at_Wed_May_25_14-09-14_CEST_2016,key4=<task_name>,name=numRecordsIn >> > was already registered. >> > javax.management.InstanceAlreadyExistsException: >> > >> > >> org.apache.flink.metrics:key0=localhost,key1=taskmanager,key2=04a8fea67d01fbbdab5bba8c7e9a73d8,key3=Flink_Java_Job_at_Wed_May_25_14-09-14_CEST_2016,key4=<task_name>,name=numRecordsIn >> > at com.sun.jmx.mbeanserver.Repository.addMBean(Repository.java:437) >> > at >> > >> > >> com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerWithRepository(DefaultMBeanServerInterceptor.java:1898) >> > at >> > >> > >> com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerDynamicMBean(DefaultMBeanServerInterceptor.java:966) >> > at >> > >> > >> com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerObject(DefaultMBeanServerInterceptor.java:900) >> > at >> > >> > >> com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerMBean(DefaultMBeanServerInterceptor.java:324) >> > at >> > >> > >> com.sun.jmx.mbeanserver.JmxMBeanServer.registerMBean(JmxMBeanServer.java:522) >> > at >> > >> > >> org.apache.flink.metrics.reporter.JMXReporter.notifyOfAddedMetric(JMXReporter.java:76) >> > at >> > org.apache.flink.metrics.MetricRegistry.register(MetricRegistry.java:177) >> > at >> > >> > >> org.apache.flink.metrics.groups.AbstractMetricGroup.addMetric(AbstractMetricGroup.java:191) >> > at >> > >> > >> org.apache.flink.metrics.groups.AbstractMetricGroup.counter(AbstractMetricGroup.java:144) >> > at >> > >> org.apache.flink.metrics.groups.IOMetricGroup.<init>(IOMetricGroup.java:42) >> > at >> > >> > >> org.apache.flink.metrics.groups.TaskMetricGroup.<init>(TaskMetricGroup.java:68) >> > at >> > >> > >> org.apache.flink.metrics.groups.JobMetricGroup.addTask(JobMetricGroup.java:74) >> > at >> > >> > >> org.apache.flink.metrics.groups.TaskManagerMetricGroup.addTaskForJob(TaskManagerMetricGroup.java:86) >> > at >> > >> > >> org.apache.flink.runtime.taskmanager.TaskManager.submitTask(TaskManager.scala:1092) >> > at org.apache.flink.runtime.taskmanager.TaskManager.org >> > >> > >> $apache$flink$runtime$taskmanager$TaskManager$$handleTaskMessage(TaskManager.scala:441) >> > at >> > >> > >> org.apache.flink.runtime.taskmanager.TaskManager$$anonfun$handleMessage$1.applyOrElse(TaskManager.scala:283) >> > at >> > >> > >> scala.runtime.AbstractPartialFunction$mcVL$sp.apply$mcVL$sp(AbstractPartialFunction.scala:33) >> > at >> > >> > >> scala.runtime.AbstractPartialFunction$mcVL$sp.apply(AbstractPartialFunction.scala:33) >> > at >> > >> > >> scala.runtime.AbstractPartialFunction$mcVL$sp.apply(AbstractPartialFunction.scala:25) >> > at >> > >> > >> org.apache.flink.runtime.LeaderSessionMessageFilter$$anonfun$receive$1.applyOrElse(LeaderSessionMessageFilter.scala:36) >> > at >> > >> > >> scala.runtime.AbstractPartialFunction$mcVL$sp.apply$mcVL$sp(AbstractPartialFunction.scala:33) >> > at >> > >> > >> scala.runtime.AbstractPartialFunction$mcVL$sp.apply(AbstractPartialFunction.scala:33) >> > at >> > >> > >> scala.runtime.AbstractPartialFunction$mcVL$sp.apply(AbstractPartialFunction.scala:25) >> > at >> org.apache.flink.runtime.LogMessages$$anon$1.apply(LogMessages.scala:33) >> > at >> org.apache.flink.runtime.LogMessages$$anon$1.apply(LogMessages.scala:28) >> > at scala.PartialFunction$class.applyOrElse(PartialFunction.scala:118) >> > at >> > >> > >> org.apache.flink.runtime.LogMessages$$anon$1.applyOrElse(LogMessages.scala:28) >> > at akka.actor.Actor$class.aroundReceive(Actor.scala:465) >> > at >> > >> > >> org.apache.flink.runtime.taskmanager.TaskManager.aroundReceive(TaskManager.scala:124) >> > at akka.actor.ActorCell.receiveMessage(ActorCell.scala:516) >> > at akka.actor.ActorCell.invoke(ActorCell.scala:487) >> > at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:254) >> > at akka.dispatch.Mailbox.run(Mailbox.scala:221) >> > at akka.dispatch.Mailbox.exec(Mailbox.scala:231) >> > at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260) >> > at >> > >> > >> scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339) >> > at >> scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979) >> > at >> > >> > >> scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107) >> > 14:09:34,732 ERROR org.apache.flink.metrics.reporter.JMXReporter >> > - A metric with the name >> > >> > >> org.apache.flink.metrics:key0=localhost,key1=taskmanager,key2=04a8fea67d01fbbdab5bba8c7e9a73d8,key3=Flink_Java_Job_at_Wed_May_25_14-09-14_CEST_2016,key4=<task_name>,name=numRecordsOut >> > was already registered. >> > javax.management.InstanceAlreadyExistsException: >> > >> > >> org.apache.flink.metrics:key0=localhost,key1=taskmanager,key2=04a8fea67d01fbbdab5bba8c7e9a73d8,key3=Flink_Java_Job_at_Wed_May_25_14-09-14_CEST_2016,key4=<task_name>,name=numRecordsOut >> > at com.sun.jmx.mbeanserver.Repository.addMBean(Repository.java:437) >> > at >> > >> > >> com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerWithRepository(DefaultMBeanServerInterceptor.java:1898) >> > at >> > >> > >> com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerDynamicMBean(DefaultMBeanServerInterceptor.java:966) >> > at >> > >> > >> com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerObject(DefaultMBeanServerInterceptor.java:900) >> > at >> > >> > >> com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerMBean(DefaultMBeanServerInterceptor.java:324) >> > at >> > >> > >> com.sun.jmx.mbeanserver.JmxMBeanServer.registerMBean(JmxMBeanServer.java:522) >> > at >> > >> > >> org.apache.flink.metrics.reporter.JMXReporter.notifyOfAddedMetric(JMXReporter.java:76) >> > at >> > org.apache.flink.metrics.MetricRegistry.register(MetricRegistry.java:177) >> > at >> > >> > >> org.apache.flink.metrics.groups.AbstractMetricGroup.addMetric(AbstractMetricGroup.java:191) >> > at >> > >> > >> org.apache.flink.metrics.groups.AbstractMetricGroup.counter(AbstractMetricGroup.java:144) >> > at >> > >> org.apache.flink.metrics.groups.IOMetricGroup.<init>(IOMetricGroup.java:43) >> > at >> > >> > >> org.apache.flink.metrics.groups.TaskMetricGroup.<init>(TaskMetricGroup.java:68) >> > at >> > >> > >> org.apache.flink.metrics.groups.JobMetricGroup.addTask(JobMetricGroup.java:74) >> > at >> > >> > >> org.apache.flink.metrics.groups.TaskManagerMetricGroup.addTaskForJob(TaskManagerMetricGroup.java:86) >> > at >> > >> > >> org.apache.flink.runtime.taskmanager.TaskManager.submitTask(TaskManager.scala:1092) >> > at org.apache.flink.runtime.taskmanager.TaskManager.org >> > >> > >> $apache$flink$runtime$taskmanager$TaskManager$$handleTaskMessage(TaskManager.scala:441) >> > at >> > >> > >> org.apache.flink.runtime.taskmanager.TaskManager$$anonfun$handleMessage$1.applyOrElse(TaskManager.scala:283) >> > at >> > >> > >> scala.runtime.AbstractPartialFunction$mcVL$sp.apply$mcVL$sp(AbstractPartialFunction.scala:33) >> > at >> > >> > >> scala.runtime.AbstractPartialFunction$mcVL$sp.apply(AbstractPartialFunction.scala:33) >> > at >> > >> > >> scala.runtime.AbstractPartialFunction$mcVL$sp.apply(AbstractPartialFunction.scala:25) >> > at >> > >> > >> org.apache.flink.runtime.LeaderSessionMessageFilter$$anonfun$receive$1.applyOrElse(LeaderSessionMessageFilter.scala:36) >> > at >> > >> > >> scala.runtime.AbstractPartialFunction$mcVL$sp.apply$mcVL$sp(AbstractPartialFunction.scala:33) >> > at >> > >> > >> scala.runtime.AbstractPartialFunction$mcVL$sp.apply(AbstractPartialFunction.scala:33) >> > at >> > >> > >> scala.runtime.AbstractPartialFunction$mcVL$sp.apply(AbstractPartialFunction.scala:25) >> > at >> org.apache.flink.runtime.LogMessages$$anon$1.apply(LogMessages.scala:33) >> > at >> org.apache.flink.runtime.LogMessages$$anon$1.apply(LogMessages.scala:28) >> > at scala.PartialFunction$class.applyOrElse(PartialFunction.scala:118) >> > at >> > >> > >> org.apache.flink.runtime.LogMessages$$anon$1.applyOrElse(LogMessages.scala:28) >> > at akka.actor.Actor$class.aroundReceive(Actor.scala:465) >> > at >> > >> > >> org.apache.flink.runtime.taskmanager.TaskManager.aroundReceive(TaskManager.scala:124) >> > at akka.actor.ActorCell.receiveMessage(ActorCell.scala:516) >> > at akka.actor.ActorCell.invoke(ActorCell.scala:487) >> > at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:254) >> > at akka.dispatch.Mailbox.run(Mailbox.scala:221) >> > at akka.dispatch.Mailbox.exec(Mailbox.scala:231) >> > at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260) >> > at >> > >> > >> scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339) >> > at >> scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979) >> > at >> > >> > >> scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107) >> > >> > >> > Here is the interesting part of the source >> > >> > val distCOO=env.fromCollection(coo.toStream) >> > val distCOO2=env.fromCollection(coo.toStream) >> > val >> > m1=DistributedRowMatrix.fromCOO(distCOO,numRows.toInt,numCols.toInt) >> > val >> > m2=DistributedRowMatrix.fromCOO(distCOO2,numRows.toInt,numCols.toInt) >> > >> > >> > >> m1.toBlockMatrix(1000,1000).multiply(m2.toBlockMatrix(1000,1000)).toRowMatrix.getRowData.first(5).print() >> > >> > >> > "coo" is a Iterator[(Int, Int, Double)]. >> > >> > Here you can find the implementation for the distributed matrix I'm >> working >> > on, if you need to follow the stacktrace: >> > >> > >> https://github.com/radicalbit/flink/tree/Flink-1873-d/flink-libraries/flink-ml/src/main/scala/org/apache/flink/ml/math/distributed >> > >>
