[ https://issues.apache.org/jira/browse/HBASE-21987?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16788561#comment-16788561 ]
Hudson commented on HBASE-21987: -------------------------------- Results for branch branch-2 [build #1740 on builds.a.o|https://builds.apache.org/job/HBase%20Nightly/job/branch-2/1740/]: (x) *{color:red}-1 overall{color}* ---- details (if available): (/) {color:green}+1 general checks{color} -- For more information [see general report|https://builds.apache.org/job/HBase%20Nightly/job/branch-2/1740//General_Nightly_Build_Report/] (x) {color:red}-1 jdk8 hadoop2 checks{color} -- For more information [see jdk8 (hadoop2) report|https://builds.apache.org/job/HBase%20Nightly/job/branch-2/1740//JDK8_Nightly_Build_Report_(Hadoop2)/] (x) {color:red}-1 jdk8 hadoop3 checks{color} -- For more information [see jdk8 (hadoop3) report|https://builds.apache.org/job/HBase%20Nightly/job/branch-2/1740//JDK8_Nightly_Build_Report_(Hadoop3)/] (x) {color:red}-1 source release artifact{color} -- See build output for details. (x) {color:red}-1 client integration test{color} -- Something went wrong with this stage, [check relevant console output|https://builds.apache.org/job/HBase%20Nightly/job/branch-2/1740//console]. > Simplify RSGroupInfoManagerImpl#flushConfig() for offline mode > -------------------------------------------------------------- > > Key: HBASE-21987 > URL: https://issues.apache.org/jira/browse/HBASE-21987 > Project: HBase > Issue Type: Improvement > Components: rsgroup > Reporter: Xiang Li > Assignee: Xiang Li > Priority: Minor > Labels: rsgroup > Attachments: HBASE-21987.branch-1.000.patch, > HBASE-21987.master.000.patch, HBASE-21987.master.001.patch, > HBASE-21987.master.002.patch, HBASE-21987.master.003.patch, > HBASE-21987.master.004.patch > > > The logic to handle offline mode in > RSGroupInfoManagerImpl#flushConfig(Map<String, RSGroupInfo> newGroupMap) > could be simplified. > {code:title=RSGroupInfoManagerImpl.java # flushConfig(Map<String, > RSGroupInfo> newGroupMap)|borderStyle=solid} > if (!isOnline()) { > Map<String, RSGroupInfo> m = Maps.newHashMap(rsGroupMap); > RSGroupInfo oldDefaultGroup = m.remove(RSGroupInfo.DEFAULT_GROUP); > RSGroupInfo newDefaultGroup = > newGroupMap.remove(RSGroupInfo.DEFAULT_GROUP); > if (!m.equals(newGroupMap) || > !oldDefaultGroup.getTables().equals(newDefaultGroup.getTables())) { > throw new IOException("Only default servers can be updated during > offline mode"); > } > newGroupMap.put(RSGroupInfo.DEFAULT_GROUP, newDefaultGroup); > rsGroupMap = newGroupMap; > return; > } > {code} > The logic is to make a copy of the private member called "rsGroupMap" as m, > and get the default group out of m and newGroupMap and then compare. Then > restore the newGroupMap and update rsGroupMap. > This function is called by > {code:title=RSGroupInfoManagerImpl.java # flushConfig() |borderStyle=solid} > private synchronized void flushConfig() throws IOException { > flushConfig(this.rsGroupMap); > } > {code} > by RSGroupInfoManagerImpl.RSGroupStartupWorker#waitForGroupTableOnline() > during HMaster starts, in which, newGroupMap (the input of flushConfig()) is > this.rsGroupMap, the comparison is not needed, because they are the same. -- This message was sent by Atlassian JIRA (v7.6.3#76005)