Hi Andra, the error is independent of the size of the data set. A HashTable needs at least 33 memory pages to operate. Since you have 820MB of managed memory and the size of a memory page is 32KB, there should be more than 25k pages available.
Can you post the execution plan of the program you execute ( ExecutionEnvironment.getExecutionPlan() )? Best, Fabian 2015-03-26 23:31 GMT+01:00 Andra Lungu <lungu.an...@gmail.com>: > For 20 edges and 5 nodes, that should be more thank enough. > > On Thu, Mar 26, 2015 at 11:24 PM, Andra Lungu <lungu.an...@gmail.com> > wrote: > > > Sure, > > > > 3470 [main] INFO org.apache.flink.runtime.taskmanager.TaskManager - > > Using 820 MB for Flink managed memory. > > > > On Thu, Mar 26, 2015 at 4:48 PM, Robert Metzger <rmetz...@apache.org> > > wrote: > > > >> Hi, > >> > >> during startup, Flink will log something like: > >> 16:48:09,669 INFO org.apache.flink.runtime.taskmanager.TaskManager > >> - Using 1193 MB for Flink managed memory. > >> > >> Can you tell us how much memory Flink is managing in your case? > >> > >> > >> > >> On Thu, Mar 26, 2015 at 4:46 PM, Andra Lungu <lungu.an...@gmail.com> > >> wrote: > >> > >> > Hello everyone, > >> > > >> > I guess I need to revive this old discussion: > >> > > >> > > >> > http://apache-flink-incubator-mailing-list-archive.1008284.n3.nabble.com/Memory-segment-error-when-migrating-functional-code-from-Flink-0-9-to-0-8-td3687.html > >> > > >> > At that point, the fix was to kindly ask Alex to make his project work > >> with > >> > 0.9. > >> > > >> > Now, I am not that lucky! > >> > > >> > This is the code: > >> > https://github.com/andralungu/gelly-partitioning/tree/alphaSplit > >> > > >> > The main program(NodeSplitting) is working nicely, I get the correct > >> > result. But if you run the test, you will see that collection works > and > >> > cluster fails miserably with this exception: > >> > > >> > Caused by: java.lang.Exception: The data preparation for task > >> 'Join(Join at > >> > weighEdges(NodeSplitting.java:112)) > (04e172e761148a65783a4363406e08c0)' > >> , > >> > caused an error: Too few memory segments provided. Hash Join needs at > >> least > >> > 33 memory segments. > >> > at > >> > > >> > > >> > org.apache.flink.runtime.operators.RegularPactTask.run(RegularPactTask.java:471) > >> > at > >> > > >> > > >> > org.apache.flink.runtime.operators.RegularPactTask.invoke(RegularPactTask.java:362) > >> > at > >> > > >> > > >> > org.apache.flink.runtime.execution.RuntimeEnvironment.run(RuntimeEnvironment.java:209) > >> > at java.lang.Thread.run(Thread.java:745) > >> > Caused by: java.lang.IllegalArgumentException: Too few memory segments > >> > provided. Hash Join needs at least 33 memory segments. > >> > > >> > I am running locally, from IntelliJ, on a tiny graph. > >> > $ cat /proc/meminfo > >> > MemTotal: 11405696 kB > >> > MemFree: 5586012 kB > >> > Buffers: 178100 kB > >> > > >> > I am sure I did not run out of memory... > >> > > >> > Any thoughts on this? > >> > > >> > Thanks! > >> > Andra > >> > > >> > > > > >
