[ https://issues.apache.org/jira/browse/HDFS-13279?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16439275#comment-16439275 ]
genericqa commented on HDFS-13279: ---------------------------------- | (x) *{color:red}-1 overall{color}* | \\ \\ || Vote || Subsystem || Runtime || Comment || | {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 0m 36s{color} | {color:blue} Docker mode activated. {color} | || || || || {color:brown} Prechecks {color} || | {color:green}+1{color} | {color:green} @author {color} | {color:green} 0m 0s{color} | {color:green} The patch does not contain any @author tags. {color} | | {color:green}+1{color} | {color:green} test4tests {color} | {color:green} 0m 0s{color} | {color:green} The patch appears to include 1 new or modified test files. {color} | || || || || {color:brown} trunk Compile Tests {color} || | {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue} 0m 20s{color} | {color:blue} Maven dependency ordering for branch {color} | | {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 28m 37s{color} | {color:green} trunk passed {color} | | {color:green}+1{color} | {color:green} compile {color} | {color:green} 31m 44s{color} | {color:green} trunk passed {color} | | {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 3m 5s{color} | {color:green} trunk passed {color} | | {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 2m 37s{color} | {color:green} trunk passed {color} | | {color:green}+1{color} | {color:green} shadedclient {color} | {color:green} 16m 22s{color} | {color:green} branch has no errors when building and testing our client artifacts. {color} | | {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 4m 7s{color} | {color:green} trunk passed {color} | | {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m 52s{color} | {color:green} trunk passed {color} | || || || || {color:brown} Patch Compile Tests {color} || | {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue} 0m 19s{color} | {color:blue} Maven dependency ordering for patch {color} | | {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 2m 7s{color} | {color:green} the patch passed {color} | | {color:green}+1{color} | {color:green} compile {color} | {color:green} 30m 34s{color} | {color:green} the patch passed {color} | | {color:green}+1{color} | {color:green} javac {color} | {color:green} 30m 34s{color} | {color:green} the patch passed {color} | | {color:orange}-0{color} | {color:orange} checkstyle {color} | {color:orange} 3m 4s{color} | {color:orange} root: The patch generated 9 new + 39 unchanged - 1 fixed = 48 total (was 40) {color} | | {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 2m 35s{color} | {color:green} the patch passed {color} | | {color:green}+1{color} | {color:green} whitespace {color} | {color:green} 0m 0s{color} | {color:green} The patch has no whitespace issues. {color} | | {color:green}+1{color} | {color:green} shadedclient {color} | {color:green} 10m 9s{color} | {color:green} patch has no errors when building and testing our client artifacts. {color} | | {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 4m 22s{color} | {color:green} the patch passed {color} | | {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m 59s{color} | {color:green} the patch passed {color} | || || || || {color:brown} Other Tests {color} || | {color:green}+1{color} | {color:green} unit {color} | {color:green} 10m 42s{color} | {color:green} hadoop-common in the patch passed. {color} | | {color:red}-1{color} | {color:red} unit {color} | {color:red}111m 44s{color} | {color:red} hadoop-hdfs in the patch failed. {color} | | {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m 39s{color} | {color:green} The patch does not generate ASF License warnings. {color} | | {color:black}{color} | {color:black} {color} | {color:black}264m 31s{color} | {color:black} {color} | \\ \\ || Reason || Tests || | Failed junit tests | hadoop.hdfs.TestLeaseRecovery2 | | | hadoop.hdfs.TestDFSStripedOutputStreamWithFailureWithRandomECPolicy | | | hadoop.hdfs.TestReconstructStripedFileWithRandomECPolicy | | | hadoop.hdfs.server.datanode.TestDataNodeVolumeFailure | | | hadoop.hdfs.server.datanode.TestDataNodeVolumeFailureReporting | | | hadoop.hdfs.server.blockmanagement.TestWeightedRackBlockPlacementPolicy | \\ \\ || Subsystem || Report/Notes || | Docker | Client=17.05.0-ce Server=17.05.0-ce Image:yetus/hadoop:8620d2b | | JIRA Issue | HDFS-13279 | | JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12919168/HDFS-13279.006.patch | | Optional Tests | asflicense compile javac javadoc mvninstall mvnsite unit shadedclient findbugs checkstyle | | uname | Linux f8a6fe236faf 3.13.0-143-generic #192-Ubuntu SMP Tue Feb 27 10:45:36 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux | | Build tool | maven | | Personality | /testptch/patchprocess/precommit/personality/provided.sh | | git revision | trunk / 896b473 | | maven | version: Apache Maven 3.3.9 | | Default Java | 1.8.0_162 | | findbugs | v3.1.0-RC1 | | checkstyle | https://builds.apache.org/job/PreCommit-HDFS-Build/23943/artifact/out/diff-checkstyle-root.txt | | unit | https://builds.apache.org/job/PreCommit-HDFS-Build/23943/artifact/out/patch-unit-hadoop-hdfs-project_hadoop-hdfs.txt | | Test Results | https://builds.apache.org/job/PreCommit-HDFS-Build/23943/testReport/ | | Max. process+thread count | 3032 (vs. ulimit of 10000) | | modules | C: hadoop-common-project/hadoop-common hadoop-hdfs-project/hadoop-hdfs U: . | | Console output | https://builds.apache.org/job/PreCommit-HDFS-Build/23943/console | | Powered by | Apache Yetus 0.8.0-SNAPSHOT http://yetus.apache.org | This message was automatically generated. > Datanodes usage is imbalanced if number of nodes per rack is not equal > ---------------------------------------------------------------------- > > Key: HDFS-13279 > URL: https://issues.apache.org/jira/browse/HDFS-13279 > Project: Hadoop HDFS > Issue Type: Bug > Affects Versions: 2.8.3, 3.0.0 > Reporter: Tao Jie > Assignee: Tao Jie > Priority: Major > Attachments: HDFS-13279.001.patch, HDFS-13279.002.patch, > HDFS-13279.003.patch, HDFS-13279.004.patch, HDFS-13279.005.patch, > HDFS-13279.006.patch > > > In a Hadoop cluster, number of nodes on a rack could be different. For > example, we have 50 Datanodes in all and 15 datanodes per rack, it would > remain 5 nodes on the last rack. In this situation, we find that storage > usage on the last 5 nodes would be much higher than other nodes. > With the default blockplacement policy, for each block, the first > replication has the same probability to write to each datanode, but the > probability for the 2nd/3rd replication to write to the last 5 nodes would > much higher than to other nodes. > Consider we write 50 blocks to such 50 datanodes. The first rep of 100 block > would distirbuted to 50 node equally. The 2rd rep of blocks which the 1st rep > is on rack1(15 reps) would send equally to other 35 nodes and each nodes > receive 0.428 rep. So does blocks on rack2 and rack3. As a result, node on > rack4(5 nodes) would receive 1.29 replications in all, while other node would > receive 0.97 reps. > ||-||Rack1(15 nodes)||Rack2(15 nodes)||Rack3(15 nodes)||Rack4(5 nodes)|| > |From rack1|-|15/35=0.43|0.43|0.43| > |From rack2|0.43|-|0.43|0.43| > |From rack3|0.43|0.43|-|0.43| > |From rack4|5/45=0.11|0.11|0.11|-| > |Total|0.97|0.97|0.97|1.29| -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org