By the way, you might have to use the "-U" flag to force Maven to update its dependencies: mvn -U clean install -DskipTests
On Thu, Oct 1, 2015 at 10:19 AM, Robert Schmidtke <ro.schmid...@gmail.com> wrote: > Sweet! I'll pull it straight away. Thanks! > > On Thu, Oct 1, 2015 at 10:18 AM, Maximilian Michels <m...@apache.org> wrote: >> >> Hi Robert, >> >> Just a quick update: The issue has been resolved in the latest Maven >> 0.10-SNAPSHOT dependency. >> >> Cheers, >> Max >> >> On Wed, Sep 30, 2015 at 3:19 PM, Robert Schmidtke >> <ro.schmid...@gmail.com> wrote: >> > Hi Max, >> > >> > thanks for your quick reply. I found the relevant code and commented it >> > out >> > for testing, seems to be working. Happily waiting for the fix. Thanks >> > again. >> > >> > Robert >> > >> > On Wed, Sep 30, 2015 at 1:42 PM, Maximilian Michels <m...@apache.org> >> > wrote: >> >> >> >> Hi Robert, >> >> >> >> This is a regression on the current master due to changes in the way >> >> Flink calculates the memory and sets the maximum direct memory size. >> >> We introduced these changes when we merged support for off-heap >> >> memory. This is not a problem in the way Flink deals with managed >> >> memory, just -XX:MaxDirectMemorySize is set too low. By default the >> >> maximum direct memory is only used by the network stack. The network >> >> library we use, allocates more direct memory than we expected. >> >> >> >> We'll push a fix to the master as soon as possible. Thank you for >> >> reporting and thanks for your patience. >> >> >> >> Best regards, >> >> Max >> >> >> >> On Wed, Sep 30, 2015 at 1:31 PM, Robert Schmidtke >> >> <ro.schmid...@gmail.com> wrote: >> >> > Hi everyone, >> >> > >> >> > I'm constantly running into OutOfMemoryErrors and for the life of me >> >> > I >> >> > cannot figure out what's wrong. Let me describe my setup. I'm running >> >> > the >> >> > current master branch of Flink on YARN (Hadoop 2.7.0). My job is an >> >> > unfinished implementation of TPC-H Q2 >> >> > >> >> > >> >> > (https://github.com/robert-schmidtke/flink-benchmarks/blob/master/xtreemfs-flink-benchmark/src/main/java/org/xtreemfs/flink/benchmark/TPCH2Benchmark.java), >> >> > I run on 8 machines (1 for JM, the other 7 for TMs) with 64G of >> >> > memory >> >> > per >> >> > machine. This is what I believe to be the relevant section of my >> >> > yarn_site.xml: >> >> > >> >> > >> >> > <property> >> >> > <name>yarn.nodemanager.resource.memory-mb</name> >> >> > <value>57344</value> >> >> > </property> >> >> > <!-- >> >> > <property> >> >> > <name>yarn.scheduler.minimum-allocation-mb</name> >> >> > <value>8192</value> >> >> > </property> >> >> > --> >> >> > <property> >> >> > <name>yarn.scheduler.maximum-allocation-mb</name> >> >> > <value>55296</value> >> >> > </property> >> >> > >> >> > <property> >> >> > <name>yarn.nodemanager.vmem-check-enabled</name> >> >> > <value>false</value> >> >> > </property> >> >> > >> >> > >> >> > And this is how I submit the job: >> >> > >> >> > >> >> > $FLINK_HOME/bin/flink run -m yarn-cluster -yjm 16384 -ytm 32768 -yn 7 >> >> > ..... >> >> > >> >> > >> >> > The TMs happily report: >> >> > >> >> > ..... >> >> > 11:50:15,577 INFO >> >> > org.apache.flink.yarn.appMaster.YarnTaskManagerRunner >> >> > - JVM Options: >> >> > 11:50:15,577 INFO >> >> > org.apache.flink.yarn.appMaster.YarnTaskManagerRunner >> >> > - -Xms24511m >> >> > 11:50:15,577 INFO >> >> > org.apache.flink.yarn.appMaster.YarnTaskManagerRunner >> >> > - -Xmx24511m >> >> > 11:50:15,577 INFO >> >> > org.apache.flink.yarn.appMaster.YarnTaskManagerRunner >> >> > - -XX:MaxDirectMemorySize=65m >> >> > ..... >> >> > >> >> > >> >> > I've tried various combinations of YARN and Flink options, to no >> >> > avail. >> >> > I >> >> > always end up with the following stacktrace: >> >> > >> >> > >> >> > >> >> > >> >> > org.apache.flink.runtime.io.network.netty.exception.LocalTransportException: >> >> > java.lang.OutOfMemoryError: Direct buffer memory >> >> > at >> >> > >> >> > >> >> > org.apache.flink.runtime.io.network.netty.PartitionRequestClientHandler.exceptionCaught(PartitionRequestClientHandler.java:153) >> >> > at >> >> > >> >> > >> >> > io.netty.channel.AbstractChannelHandlerContext.invokeExceptionCaught(AbstractChannelHandlerContext.java:246) >> >> > at >> >> > >> >> > >> >> > io.netty.channel.AbstractChannelHandlerContext.fireExceptionCaught(AbstractChannelHandlerContext.java:224) >> >> > at >> >> > >> >> > >> >> > io.netty.channel.ChannelInboundHandlerAdapter.exceptionCaught(ChannelInboundHandlerAdapter.java:131) >> >> > at >> >> > >> >> > >> >> > io.netty.channel.AbstractChannelHandlerContext.invokeExceptionCaught(AbstractChannelHandlerContext.java:246) >> >> > at >> >> > >> >> > >> >> > io.netty.channel.AbstractChannelHandlerContext.fireExceptionCaught(AbstractChannelHandlerContext.java:224) >> >> > at >> >> > >> >> > >> >> > io.netty.channel.ChannelInboundHandlerAdapter.exceptionCaught(ChannelInboundHandlerAdapter.java:131) >> >> > at >> >> > >> >> > >> >> > io.netty.channel.AbstractChannelHandlerContext.invokeExceptionCaught(AbstractChannelHandlerContext.java:246) >> >> > at >> >> > >> >> > >> >> > io.netty.channel.AbstractChannelHandlerContext.notifyHandlerException(AbstractChannelHandlerContext.java:737) >> >> > at >> >> > >> >> > >> >> > io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:310) >> >> > at >> >> > >> >> > >> >> > io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:294) >> >> > at >> >> > >> >> > >> >> > io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:846) >> >> > at >> >> > >> >> > >> >> > io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:131) >> >> > at >> >> > >> >> > >> >> > io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:511) >> >> > at >> >> > >> >> > >> >> > io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:468) >> >> > at >> >> > >> >> > >> >> > io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:382) >> >> > at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:354) >> >> > at >> >> > >> >> > >> >> > io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:112) >> >> > at java.lang.Thread.run(Thread.java:745) >> >> > Caused by: io.netty.handler.codec.DecoderException: >> >> > java.lang.OutOfMemoryError: Direct buffer memory >> >> > at >> >> > >> >> > >> >> > io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:234) >> >> > at >> >> > >> >> > >> >> > io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:308) >> >> > ... 9 more >> >> > Caused by: java.lang.OutOfMemoryError: Direct buffer memory >> >> > at java.nio.Bits.reserveMemory(Bits.java:658) >> >> > at java.nio.DirectByteBuffer.<init>(DirectByteBuffer.java:123) >> >> > at java.nio.ByteBuffer.allocateDirect(ByteBuffer.java:306) >> >> > at >> >> > >> >> > >> >> > io.netty.buffer.UnpooledUnsafeDirectByteBuf.allocateDirect(UnpooledUnsafeDirectByteBuf.java:108) >> >> > at >> >> > >> >> > >> >> > io.netty.buffer.UnpooledUnsafeDirectByteBuf.capacity(UnpooledUnsafeDirectByteBuf.java:157) >> >> > at >> >> > >> >> > io.netty.buffer.AbstractByteBuf.ensureWritable(AbstractByteBuf.java:251) >> >> > at >> >> > io.netty.buffer.AbstractByteBuf.writeBytes(AbstractByteBuf.java:849) >> >> > at >> >> > io.netty.buffer.AbstractByteBuf.writeBytes(AbstractByteBuf.java:841) >> >> > at >> >> > io.netty.buffer.AbstractByteBuf.writeBytes(AbstractByteBuf.java:831) >> >> > at >> >> > >> >> > >> >> > io.netty.handler.codec.ByteToMessageDecoder$1.cumulate(ByteToMessageDecoder.java:92) >> >> > at >> >> > >> >> > >> >> > io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:228) >> >> > ... 10 more >> >> > >> >> > >> >> > I always figured that running into OOMEs with Flink would be quite >> >> > hard >> >> > to >> >> > achieve, however I'm wondering what's going wrong now. Seems to be >> >> > related >> >> > to the Direct Memory? Why are you limiting it in the JVM options at >> >> > all? >> >> > Is >> >> > there a special place where I can safely increase the size / remove >> >> > the >> >> > option altogether for unboundedness? >> >> > >> >> > A note on the data sizes, I used a scaling factor 1000 for the dbgen >> >> > command >> >> > of TPC-H, which effectively means the following. Each table is split >> >> > in >> >> > 7 >> >> > chunks (one local to each TM), each chunk of the part.tbl is 734M, >> >> > each >> >> > chunk of supplier.tbl is 43M, each chunk of partsupp.tbl is 3.6G. >> >> > These >> >> > are >> >> > not excessive amounts of data, however the query (at least my >> >> > implementation) involves joins (the one in line 249 causing the OOME) >> >> > and >> >> > maybe there are some network issues? >> >> > >> >> > Maybe you can point me into the right direction, thanks a bunch. >> >> > Cheers. >> >> > >> >> > Robert >> > >> > >> > >> > >> > -- >> > My GPG Key ID: 336E2680 > > > > > -- > My GPG Key ID: 336E2680
