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Anu Engineer commented on HDFS-11361: ------------------------------------- Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.1:compile (default-compile) on project hadoop-hdfs: Compilation failure /testptch/hadoop/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/cblock/CBlockConfigKeys.java:[36,29] error: variable DFS_CBLOCK_SERVICERPC_HOSTNAME_DEFAULT is already defined in class CBlockConfigKeys > Block Storage : add cache interface > ----------------------------------- > > Key: HDFS-11361 > URL: https://issues.apache.org/jira/browse/HDFS-11361 > Project: Hadoop HDFS > Issue Type: Sub-task > Components: hdfs > Reporter: Chen Liang > Assignee: Chen Liang > Attachments: HDFS-11361-HDFS-7240.001.patch, > HDFS-11361-HDFS-7240.002.patch, HDFS-11361-HDFS-7240.003.patch, > HDFS-11361-HDFS-7240.004.patch, HDFS-11361-HDFS-7240.005.patch, > HDFS-11361-HDFS-7240.006.patch, HDFS-11361-HDFS-7240.007.patch > > > This JIRA includes two major pieces: 1. the interface exposed to upper layer > operating system that mounts the file system; and 2. the interface exposed to > lower layer container storage layer. > On one hand, to make CBlock mountable and accessible for a POSIX OS, we need > to implement file system protocol. We chose to do this by running cblock with > jSCSI (http://jscsi.org/) which is a java implementation of iSCSI protocol. > More specifically, CBlock volume will exposed as an java-based iSCSI target, > and any machine that has iSCSI installed will be able to talk to CBlock > volume and mounted locally just as any disks. This is JIRA make a starting > point by introducing jSCSI and implementing its {{IStorageModule}}. This will > be registered to jSCSI server in future JIRA. > One the other hand, to be able to have the CBlock talk to container layer > with better performance, CBlock should be able to cache data locally. More > specifically, clients' read/write should be performed on the locally disk > cache, while threads are pushing and retrieving data in backend. This JIRA > takes the first step by defining interfaces for the local cache. -- This message was sent by Atlassian JIRA (v6.3.15#6346) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org