Hello, I had setup giraph 1.1.0 with hadoop-0.20.203.0rc1 on a single node cluster. It computes a tiny graph successful. But if the input graph is huge (5 GB), I get an OutOfMemory(Garbage Collector) exception, although I had turned on the out-of-memory-option. The job with out-of-memory-option works only well with a tiny graph (0.9 GB). What is Wrong? Does I have to do furthermore configurations?
My Configurations are as follows: namevalue *fs.s3n.impl*org.apache.hadoop.fs.s3native.NativeS3FileSystem *mapred.task.cache.levels*2 *giraph.vertexOutputFormatClass* org.apache.giraph.examples.MyShortestPaths$MyOutputFormat *hadoop.tmp.dir* /app/hadoop/tmp *hadoop.native.lib*true *map.sort.class* org.apache.hadoop.util.QuickSort *dfs.namenode.decommission.nodes.per.interval*5 *dfs.https.need.client.auth*false *ipc.client.idlethreshold*4000 *dfs.datanode.data.dir.perm*755 *mapred.system.dir* ${hadoop.tmp.dir}/mapred/system *mapred.job.tracker.persist.jobstatus.hours*0 *dfs.datanode.address* 0.0.0.0:50010 *dfs.namenode.logging.level*info *dfs.block.access.token.enable*false *io.skip.checksum.errors*false *fs.default.name <http://fs.default.name>*hdfs://localhost:54310 *mapred.cluster.reduce.memory.mb*-1 *mapred.child.tmp*./tmp *fs.har.impl.disable.cache*true *dfs.safemode.threshold.pct*0.999f *mapred.skip.reduce.max.skip.groups*0 *dfs.namenode.handler.count*10 *dfs.blockreport.initialDelay*0 *mapred.heartbeats.in.second*100 *mapred.tasktracker.dns.nameserver*default *io.sort.factor*10 *mapred.task.timeout*600000 *giraph.maxWorkers*1 *mapred.max.tracker.failures*4 *hadoop.rpc.socket.factory.class.default* org.apache.hadoop.net.StandardSocketFactory *mapred.job.tracker.jobhistory.lru.cache.size*5 *fs.hdfs.impl* org.apache.hadoop.hdfs.DistributedFileSystem *mapred.queue.default.acl-administer-jobs** *dfs.block.access.key.update.interval*600 *mapred.skip.map.auto.incr.proc.count*true *mapreduce.job.complete.cancel.delegation.tokens*true *io.mapfile.bloom.size*1048576 *mapreduce.reduce.shuffle.connect.timeout* 180000 *dfs.safemode.extension*30000 *mapred.jobtracker.blacklist.fault-timeout-window*180 *tasktracker.http.threads*40 *mapred.job.shuffle.merge.percent*0.66 *mapreduce.inputformat.class*org.apache.giraph.bsp.BspInputFormat *fs.ftp.impl*org.apache.hadoop.fs.ftp.FTPFileSystem *user.name <http://user.name>*hduser *mapred.output.compress*false *io.bytes.per.checksum*512 *giraph.isStaticGraph*true *mapred.healthChecker.script.timeout*600000 *topology.node.switch.mapping.impl*org.apache.hadoop.net.ScriptBasedMapping *dfs.https.server.keystore.resource*ssl-server.xml *mapred.reduce.slowstart.completed.maps*0.05 *mapred.reduce.max.attempts*4 *fs.ramfs.impl*org.apache.hadoop.fs.InMemoryFileSystem *dfs.block.access.token.lifetime*600 *dfs.name.edits.dir*${dfs.name.dir} *mapred.skip.map.max.skip.records*0 *mapred.cluster.map.memory.mb*-1 *hadoop.security.group.mapping* org.apache.hadoop.security.ShellBasedUnixGroupsMapping *mapred.job.tracker.persist.jobstatus.dir*/jobtracker/jobsInfo *mapred.jar* hdfs://localhost:54310/app/hadoop/tmp/mapred/staging/hduser/.staging/job_201312051827_0001/job.jar *dfs.block.size*67108864 *fs.s3.buffer.dir*${hadoop.tmp.dir}/s3 *job.end.retry.attempts*0 *fs.file.impl* org.apache.hadoop.fs.LocalFileSystem *mapred.local.dir.minspacestart*0 *mapred.output.compression.type*RECORD *dfs.datanode.ipc.address* 0.0.0.0:50020 *dfs.permissions*true *topology.script.number.args*100 *io.mapfile.bloom.error.rate*0.005 *mapred.cluster.max.reduce.memory.mb*-1 *mapred.max.tracker.blacklists*4 *mapred.task.profile.maps*0-2 *dfs.datanode.https.address*0.0.0.0:50475 *mapred.userlog.retain.hours*24 *dfs.secondary.http.address*0.0.0.0:50090 *dfs.replication.max*512 *mapred.job.tracker.persist.jobstatus.active*false *hadoop.security.authorization*false *local.cache.size*10737418240 *dfs.namenode.delegation.token.renew-interval*86400000 *mapred.min.split.size*0 *mapred.map.tasks*2 *mapred.child.java.opts* -Xmx4000m *mapreduce.job.counters.limit*120 *dfs.https.client.keystore.resource*ssl-client.xml *mapred.job.queue.name <http://mapred.job.queue.name>*default *dfs.https.address*0.0.0.0:50470 *mapred.job.tracker.retiredjobs.cache.size*1000 *dfs.balance.bandwidthPerSec*1048576 *ipc.server.listen.queue.size*128 *mapred.inmem.merge.threshold*1000 *job.end.retry.interval*30000 *mapred.skip.attempts.to.start.skipping*2 *fs.checkpoint.dir* ${hadoop.tmp.dir}/dfs/namesecondary *mapred.reduce.tasks*0 *mapred.merge.recordsBeforeProgress*10000 *mapred.userlog.limit.kb*0 *mapred.job.reduce.memory.mb*-1 *dfs.max.objects*0 *webinterface.private.actions*false *io.sort.spill.percent*0.80 *mapred.job.shuffle.input.buffer.percent*0.70 *mapred.job.name <http://mapred.job.name>*Giraph: org.apache.giraph.examples.MyShortestPaths *dfs.datanode.dns.nameserver*default *mapred.map.tasks.speculative.execution*false *hadoop.util.hash.type*murmur *dfs.blockreport.intervalMsec*3600000 *mapred.map.max.attempts*0 *mapreduce.job.acl-view-job* *dfs.client.block.write.retries*3 *mapred.job.tracker.handler.count*10 *mapreduce.reduce.shuffle.read.timeout*180000 *mapred.tasktracker.expiry.interval*600000 *dfs.https.enable*false *mapred.jobtracker.maxtasks.per.job*-1 *mapred.jobtracker.job.history.block.size*3145728 *giraph.useOutOfCoreGiraph*true *keep.failed.task.files*false *mapreduce.outputformat.class*org.apache.giraph.bsp.BspOutputFormat *dfs.datanode.failed.volumes.tolerated*0 *ipc.client.tcpnodelay*false *mapred.task.profile.reduces*0-2 *mapred.output.compression.codec* org.apache.hadoop.io.compress.DefaultCodec *io.map.index.skip*0 *mapred.working.dir*hdfs://localhost:54310/user/hduser *ipc.server.tcpnodelay*false *mapred.jobtracker.blacklist.fault-bucket-width*15 *dfs.namenode.delegation.key.update-interval*86400000 *mapred.used.genericoptionsparser*true *mapred.mapper.new-api*true *mapred.job.map.memory.mb*-1 *giraph.vertex.input.dir* hdfs://localhost:54310/user/hduser/output *dfs.default.chunk.view.size* 32768 *hadoop.logfile.size*10000000 *mapred.reduce.tasks.speculative.execution*true *mapreduce.job.dir* hdfs://localhost:54310/app/hadoop/tmp/mapred/staging/hduser/.staging/job_201312051827_0001 *mapreduce.tasktracker.outofband.heartbeat*false *mapreduce.reduce.input.limit*-1 *dfs.datanode.du.reserved*0 *hadoop.security.authentication*simple *fs.checkpoint.period*3600 *dfs.web.ugi*webuser,webgroup *mapred.job.reuse.jvm.num.tasks*1 *mapred.jobtracker.completeuserjobs.maximum*100 *dfs.df.interval*60000 *dfs.data.dir*${hadoop.tmp.dir}/dfs/data *mapred.task.tracker.task-controller* org.apache.hadoop.mapred.DefaultTaskController *giraph.minWorkers*1 *fs.s3.maxRetries*4 *dfs.datanode.dns.interface*default *mapred.cluster.max.map.memory.mb*-1 *dfs.support.append*false *mapreduce.job.acl-modify-job* *dfs.permissions.supergroup*supergroup *mapred.local.dir* ${hadoop.tmp.dir}/mapred/local *fs.hftp.impl* org.apache.hadoop.hdfs.HftpFileSystem *fs.trash.interval*0 *fs.s3.sleepTimeSeconds*10 *dfs.replication.min*1 *mapred.submit.replication*10 *fs.har.impl* org.apache.hadoop.fs.HarFileSystem *mapred.map.output.compression.codec* org.apache.hadoop.io.compress.DefaultCodec *mapred.tasktracker.dns.interface*default *dfs.namenode.decommission.interval*30 *dfs.http.address*0.0.0.0:50070 *dfs.heartbeat.interval*3 *mapred.job.tracker*localhost:54311 *mapreduce.job.submithost*hduser *io.seqfile.sorter.recordlimit*1000000 *giraph.vertexInputFormatClass* org.apache.giraph.examples.MyShortestPaths$MyInputFormat *dfs.name.dir* ${hadoop.tmp.dir}/dfs/name *mapred.line.input.format.linespermap*1 *mapred.jobtracker.taskScheduler* org.apache.hadoop.mapred.JobQueueTaskScheduler *dfs.datanode.http.address* 0.0.0.0:50075 *mapred.local.dir.minspacekill*0 *dfs.replication.interval*3 *io.sort.record.percent*0.05 *fs.kfs.impl* org.apache.hadoop.fs.kfs.KosmosFileSystem *mapred.temp.dir* ${hadoop.tmp.dir}/mapred/temp *mapred.tasktracker.reduce.tasks.maximum*2 *mapreduce.job.user.classpath.first*true *dfs.replication*1 *fs.checkpoint.edits.dir*${fs.checkpoint.dir} *giraph.computationClass* org.apache.giraph.examples.MyShortestPaths *mapred.tasktracker.tasks.sleeptime-before-sigkill*5000 *mapred.job.reduce.input.buffer.percent*0.0 *mapred.tasktracker.indexcache.mb*10 *mapreduce.job.split.metainfo.maxsize* 10000000 *hadoop.logfile.count*10 *mapred.skip.reduce.auto.incr.proc.count*true *mapreduce.job.submithostaddress*127.0.1.1 *io.seqfile.compress.blocksize* 1000000 *fs.s3.block.size*67108864 *mapred.tasktracker.taskmemorymanager.monitoring-interval*5000 *giraph.minPercentResponded*100.0 *mapred.queue.default.state*RUNNING *mapred.acls.enabled*false *mapreduce.jobtracker.staging.root.dir* ${hadoop.tmp.dir}/mapred/staging *mapred.queue.names*default *dfs.access.time.precision*3600000 *fs.hsftp.impl* org.apache.hadoop.hdfs.HsftpFileSystem *mapred.task.tracker.http.address* 0.0.0.0:50060 *mapred.reduce.parallel.copies*5 *io.seqfile.lazydecompress* true *mapred.output.dir*/user/hduser/output/shortestpaths *io.sort.mb*100 *ipc.client.connection.maxidletime*10000 *mapred.compress.map.output*false *hadoop.security.uid.cache.secs*14400 *mapred.task.tracker.report.address* 127.0.0.1:0 *mapred.healthChecker.interval*60000 *ipc.client.kill.max*10 *ipc.client.connect.max.retries*10 *ipc.ping.interval*300000 *mapreduce.user.classpath.first*true *mapreduce.map.class* org.apache.giraph.graph.GraphMapper *fs.s3.impl* org.apache.hadoop.fs.s3.S3FileSystem *mapred.user.jobconf.limit*5242880 *mapred.job.tracker.http.address*0.0.0.0:50030 *io.file.buffer.size*4096 *mapred.jobtracker.restart.recover*false *io.serializations* org.apache.hadoop.io.serializer.WritableSerialization *dfs.datanode.handler.count*3 *mapred.reduce.copy.backoff*300 *mapred.task.profile*false *dfs.replication.considerLoad*true *jobclient.output.filter*FAILED *dfs.namenode.delegation.token.max-lifetime*604800000 *mapred.tasktracker.map.tasks.maximum*4 *io.compression.codecs* org.apache.hadoop.io.compress.DefaultCodec,org.apache.hadoop.io.compress.GzipCodec,org.apache.hadoop.io.compress.BZip2Codec *fs.checkpoint.size*67108864 Additionally, if I have more than one worker I get an Exception, too? Are my configurations wrong? best regards, Sebastian