HADOOP DOCS 1. hadoop main docs : https://hadoop.apache.org/docs/r2.10.1/ 2. hadoop reference docs : https://hadoop.apache.org... 취함 - Speculative rask execution 즉, 대용량 데이터를 위한 컴퓨팅은 이전과는 근본적인 다른 접근...
배포설정 $HADOOP_HOME/lib에 등록 bin/hadoop -jar 실행시 -libjars 옵션 DistributedCache 사용 1. 맵리듀스 잡 실행 상세 분석 이미지출처 : Hadoop Map Reduce Introduction - socurites 잡 제출 JobClient 는 JobTracker...
count hadoop은 word count 먼저 수행하고 top-10 따로 뽑음 복잡도를 너무 한 작업에 주지... Task Execution speculative execution of tasks 한 작업이 끝나지 않고 계속 독점하고 있으면...
또한 reduce는 주기적으로 A.M과 communicate하고 있고, map output을 다 검색하기 전까지 A.M에게 ask한다. Task Execution Speculative execution of task: Hadoop은 tas
과연 hadoop map-reduce 관련 프로그래밍을 다시할 일이 있을까 싶은데.. map... https://hadoop.apache.org/docs/r2.7.2/hadoop-mapreduce-client/hadoop-mapreduce-client-core...
Deprecated property name, New property name ; create.empty.dir.if.nonexist, mapreduce.jobcontrol.createdir.ifnotexist ; dfs.access.time.precision, dfs.namenode.accesstime.precision ; dfs.backup.address, dfs.namenode.backup.address ; dfs.backup.http.address, dfs.namenode.backup.http-address ; dfs.balance.bandwidthPerSec, dfs.datanode.balance.bandwidthPerSec ; dfs.block.size, dfs.blocksize ; dfs.data.dir, dfs.datanode.data.dir ; dfs.datanode.max.xcievers, dfs.datanode.max.transfer.threads ; dfs.df.interval, fs.df.interval ; dfs.encryption.key.provider.uri, hadoop.security.key.provider.path ; dfs.federation.nameservice.id, dfs.nameservice.id ; dfs.federation.nameservices, dfs.nameservices ; dfs.http.address, dfs.namenode.http-address ; dfs.https.address, dfs.namenode.https-address ; dfs.https.client.keystore.resource, dfs.client.https.keystore.resource ; dfs.https.need.client.auth, dfs.client.https.need-auth ; dfs.max.objects, dfs.namenode.max.objects ; dfs.max-repl-streams, dfs.namenode.replication.max-streams ; dfs.name.dir, dfs.namenode.name.dir ; dfs.name.dir.restore, dfs.namenode.name.dir.restore ; dfs.name.edits.dir, dfs.namenode.edits.dir ; dfs.permissions, dfs.permissions.enabled ; dfs.permissions.supergroup, dfs.permissions.superusergroup ; dfs.read.prefetch.size, dfs.client.read.prefetch.size ; dfs.replication.considerLoad, dfs.namenode.redundancy.considerLoad ; dfs.namenode.replication.considerLoad, dfs.namenode.redundancy.considerLoad ; dfs.namenode.replication.considerLoad.factor, dfs.namenode.redundancy.considerLoad.factor ; dfs.replication.interval, dfs.namenode.redundancy.interval ; dfs.namenode.replication.interval, dfs.namenode.redundancy.interval ; dfs.replication.min, dfs.namenode.replication.min ; dfs.replication.pending.timeout.sec, dfs.namenode.reconstruction.pending.timeout-sec ; dfs.namenode.replication.pending.timeout-sec, dfs.namenode.reconstruction.pending.timeout-sec ; dfs.safemode.extension, dfs.namenode.safemode.extension ; dfs.safemode.threshold.pct, dfs.namenode.safemode.threshold-pct ; dfs.secondary.http.address, dfs.namenode.secondary.http-address ; dfs.socket.timeout, dfs.client.socket-timeout ; dfs.umaskmode, fs.permissions.umask-mode ; dfs.web.ugi, hadoop.http.staticuser.user ; dfs.write.packet.size, dfs.client-write-packet-size ; fs.checkpoint.dir, dfs.namenode.checkpoint.dir ; fs.checkpoint.edits.dir, dfs.namenode.checkpoint.edits.dir ; fs.checkpoint.period, dfs.namenode.checkpoint.period ; fs.default.name, fs.defaultFS ; fs.s3a.server-side-encryption-key, fs.s3a.server-side-encryption.key ; hadoop.configured.node.mapping, net.topology.configured.node.mapping ; hadoop.native.lib, io.native.lib.available ; hadoop.pipes.command-file.keep, mapreduce.pipes.commandfile.preserve ; hadoop.pipes.executable.interpretor, mapreduce.pipes.executable.interpretor ; hadoop.pipes.executable, mapreduce.pipes.executable ; hadoop.pipes.java.mapper, mapreduce.pipes.isjavamapper ; hadoop.pipes.java.recordreader, mapreduce.pipes.isjavarecordreader ; hadoop.pipes.java.recordwriter, mapreduce.pipes.isjavarecordwriter ; hadoop.pipes.java.reducer, mapreduce.pipes.isjavareducer ; hadoop.pipes.partitioner, mapreduce.pipes.partitioner ; heartbeat.recheck.interval, dfs.namenode.heartbeat.recheck-interval ; httpfs.authentication.kerberos.keytab, hadoop.http.authentication.kerberos.keytab ; httpfs.authentication.kerberos.principal, hadoop.http.authentication.kerberos.principal ; httpfs.authentication.signature.secret.file, hadoop.http.authentication.signature.secret.file ; httpfs.authentication.type, hadoop.http.authentication.type ; io.bytes.per.checksum, dfs.bytes-per-checksum ; io.sort.factor, mapreduce.task.io.sort.factor ; io.sort.mb, mapreduce.task.io.sort.mb ; io.sort.spill.percent, mapreduce.map.sort.spill.percent ; jobclient.completion.poll.interval, mapreduce.client.completion.pollinterval ; jobclient.output.filter, mapreduce.client.output.filter ; jobclient.progress.monitor.poll.interval, mapreduce.client.progressmonitor.pollinterval ; job.end.notification.url, mapreduce.job.end-notification.url ; job.end.retry.attempts, mapreduce.job.end-notification.retry.attempts ; job.end.retry.interval, mapreduce.job.end-notification.retry.interval ; job.local.dir, mapreduce.job.local.dir ; keep.failed.task.files, mapreduce.task.files.preserve.failedtasks ; keep.task.files.pattern, mapreduce.task.files.preserve.filepattern ; key.value.separator.in.input.line, mapreduce.input.keyvaluelinerecordreader.key.value.separator ; map.input.file, mapreduce.map.input.file ; map.input.length, mapreduce.map.input.length ; map.input.start, mapreduce.map.input.start ; map.output.key.field.separator, mapreduce.map.output.key.field.separator ; map.output.key.value.fields.spec, mapreduce.fieldsel.map.output.key.value.fields.spec ; mapred.acls.enabled, mapreduce.cluster.acls.enabled ; mapred.binary.partitioner.left.offset, mapreduce.partition.binarypartitioner.left.offset ; mapred.binary.partitioner.right.offset, mapreduce.partition.binarypartitioner.right.offset ; mapred.cache.archives, mapreduce.job.cache.archives ; mapred.cache.archives.timestamps, mapreduce.job.cache.archives.timestamps ; mapred.cache.files, mapreduce.job.cache.files ; mapred.cache.files.timestamps, mapreduce.job.cache.files.timestamps ; mapred.cache.localArchives, mapreduce.job.cache.local.archives ; mapred.cache.localFiles, mapreduce.job.cache.local.files ; mapred.child.tmp, mapreduce.task.tmp.dir ; mapred.cluster.map.memory.mb, mapreduce.cluster.mapmemory.mb ; mapred.cluster.max.map.memory.mb, mapreduce.jobtracker.maxmapmemory.mb ; mapred.cluster.max.reduce.memory.mb, mapreduce.jobtracker.maxreducememory.mb ; mapred.cluster.reduce.memory.mb, mapreduce.cluster.reducememory.mb ; mapred.committer.job.setup.cleanup.needed, mapreduce.job.committer.setup.cleanup.needed ; mapred.compress.map.output, mapreduce.map.output.compress ; mapred.data.field.separator, mapreduce.fieldsel.data.field.separator ; mapred.debug.out.lines, mapreduce.task.debugout.lines ; mapred.inmem.merge.threshold, mapreduce.reduce.merge.inmem.threshold ; mapred.input.dir.formats, mapreduce.input.multipleinputs.dir.formats ; mapred.input.dir.mappers, mapreduce.input.multipleinputs.dir.mappers
We had one job with speculative execution hang. 4 reduce tasks were stuck with 95% completion because of a bad disk. Devaraj pointed out bq . One of the conditions that must be met for...
What is Hadoop? 데용량 데이터를 분산처리 할 수 있는 아파치... of Hadoop 데이터가 있는 곳으로 코드를 이용한다. 화살표... Development of Hadoop Doug Cutting이 Nutch 크롤, 컴색 패키지에 구글...
Hive 잠금(lock) ; Hive 투기적 실행(Speculative execution) ; Hive 자바 가상 머신 재사용
Path-Based Speculative Execution (PBSE) on Hadoop. Contribute to ucare-uchicago/hadoop-pbse development by creating an account on GitHub.