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Hudson commented on YARN-1492: ------------------------------ FAILURE: Integrated in Hadoop-Yarn-trunk #697 (See [https://builds.apache.org/job/Hadoop-Yarn-trunk/697/]) YARN-2179. [YARN-1492] Initial cache manager structure and context. (Chris Trezzo via kasha) (kasha: rev 17d1202c35a1992eab66ea05dfd2baf219a17aec) * hadoop-yarn-project/CHANGES.txt * hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-sharedcachemanager/src/test/java/org/apache/hadoop/yarn/server/sharedcachemanager/TestRemoteAppChecker.java * hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-sharedcachemanager/src/main/java/org/apache/hadoop/yarn/server/sharedcachemanager/SharedCacheManager.java * hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-common/src/main/java/org/apache/hadoop/yarn/server/sharedcache/SharedCacheStructureUtil.java * hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/pom.xml * hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-sharedcachemanager/pom.xml * hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/java/org/apache/hadoop/yarn/conf/YarnConfiguration.java * hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-sharedcachemanager/src/main/java/org/apache/hadoop/yarn/server/sharedcachemanager/RemoteAppChecker.java * hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-sharedcachemanager/src/main/java/org/apache/hadoop/yarn/server/sharedcachemanager/AppChecker.java * hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/resources/yarn-default.xml * hadoop-yarn-project/hadoop-yarn/bin/yarn > truly shared cache for jars (jobjar/libjar) > ------------------------------------------- > > Key: YARN-1492 > URL: https://issues.apache.org/jira/browse/YARN-1492 > Project: Hadoop YARN > Issue Type: New Feature > Affects Versions: 2.0.4-alpha > Reporter: Sangjin Lee > Assignee: Chris Trezzo > Priority: Critical > Attachments: YARN-1492-all-trunk-v1.patch, > YARN-1492-all-trunk-v2.patch, YARN-1492-all-trunk-v3.patch, > YARN-1492-all-trunk-v4.patch, YARN-1492-all-trunk-v5.patch, > shared_cache_design.pdf, shared_cache_design_v2.pdf, > shared_cache_design_v3.pdf, shared_cache_design_v4.pdf, > shared_cache_design_v5.pdf, shared_cache_design_v6.pdf > > > Currently there is the distributed cache that enables you to cache jars and > files so that attempts from the same job can reuse them. However, sharing is > limited with the distributed cache because it is normally on a per-job basis. > On a large cluster, sometimes copying of jobjars and libjars becomes so > prevalent that it consumes a large portion of the network bandwidth, not to > speak of defeating the purpose of "bringing compute to where data is". This > is wasteful because in most cases code doesn't change much across many jobs. > I'd like to propose and discuss feasibility of introducing a truly shared > cache so that multiple jobs from multiple users can share and cache jars. > This JIRA is to open the discussion. -- This message was sent by Atlassian JIRA (v6.3.4#6332)