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Hadoop QA commented on HDFS-13762: ---------------------------------- | (x) *{color:red}-1 overall{color}* | \\ \\ || Vote || Subsystem || Runtime || Comment || | {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 2m 27s{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 3 new or modified test files. {color} | || || || || {color:brown} trunk Compile Tests {color} || | {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue} 1m 10s{color} | {color:blue} Maven dependency ordering for branch {color} | | {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 21m 35s{color} | {color:green} trunk passed {color} | | {color:green}+1{color} | {color:green} compile {color} | {color:green} 17m 36s{color} | {color:green} trunk passed {color} | | {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 3m 59s{color} | {color:green} trunk passed {color} | | {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 15m 30s{color} | {color:green} trunk passed {color} | | {color:green}+1{color} | {color:green} shadedclient {color} | {color:green} 12m 21s{color} | {color:green} branch has no errors when building and testing our client artifacts. {color} | | {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue} 0m 0s{color} | {color:blue} Skipped patched modules with no Java source: hadoop-project-dist . {color} | | {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 3m 52s{color} | {color:green} trunk passed {color} | | {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 5m 51s{color} | {color:green} trunk passed {color} | || || || || {color:brown} Patch Compile Tests {color} || | {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue} 0m 26s{color} | {color:blue} Maven dependency ordering for patch {color} | | {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 23m 23s{color} | {color:green} the patch passed {color} | | {color:red}-1{color} | {color:red} compile {color} | {color:red} 1m 4s{color} | {color:red} root in the patch failed. {color} | | {color:red}-1{color} | {color:red} cc {color} | {color:red} 1m 4s{color} | {color:red} root in the patch failed. {color} | | {color:red}-1{color} | {color:red} javac {color} | {color:red} 1m 4s{color} | {color:red} root in the patch failed. {color} | | {color:orange}-0{color} | {color:orange} checkstyle {color} | {color:orange} 3m 35s{color} | {color:orange} root: The patch generated 16 new + 784 unchanged - 3 fixed = 800 total (was 787) {color} | | {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 14m 0s{color} | {color:green} the patch passed {color} | | {color:green}+1{color} | {color:green} shellcheck {color} | {color:green} 0m 1s{color} | {color:green} There were no new shellcheck issues. {color} | | {color:green}+1{color} | {color:green} shelldocs {color} | {color:green} 0m 14s{color} | {color:green} There were no new shelldocs issues. {color} | | {color:green}+1{color} | {color:green} whitespace {color} | {color:green} 0m 1s{color} | {color:green} The patch has no whitespace issues. {color} | | {color:green}+1{color} | {color:green} xml {color} | {color:green} 0m 3s{color} | {color:green} The patch has no ill-formed XML file. {color} | | {color:green}+1{color} | {color:green} shadedclient {color} | {color:green} 12m 29s{color} | {color:green} patch has no errors when building and testing our client artifacts. {color} | | {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue} 0m 0s{color} | {color:blue} Skipped patched modules with no Java source: hadoop-project-dist . {color} | | {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 4m 11s{color} | {color:green} the patch passed {color} | | {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 6m 6s{color} | {color:green} the patch passed {color} | || || || || {color:brown} Other Tests {color} || | {color:red}-1{color} | {color:red} unit {color} | {color:red} 7m 59s{color} | {color:red} root in the patch failed. {color} | | {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m 47s{color} | {color:green} The patch does not generate ASF License warnings. {color} | | {color:black}{color} | {color:black} {color} | {color:black}160m 34s{color} | {color:black} {color} | \\ \\ || Subsystem || Report/Notes || | Docker | Client=17.05.0-ce Server=17.05.0-ce Image:yetus/hadoop:8f97d6f | | JIRA Issue | HDFS-13762 | | JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12948790/HDFS-13762.002.patch | | Optional Tests | dupname asflicense shellcheck shelldocs compile javac javadoc mvninstall mvnsite unit shadedclient xml cc findbugs checkstyle | | uname | Linux a91dee04284a 3.13.0-153-generic #203-Ubuntu SMP Thu Jun 14 08:52:28 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux | | Build tool | maven | | Personality | /testptch/patchprocess/precommit/personality/provided.sh | | git revision | trunk / 397f523 | | maven | version: Apache Maven 3.3.9 | | Default Java | 1.8.0_181 | | shellcheck | v0.4.6 | | findbugs | v3.1.0-RC1 | | compile | https://builds.apache.org/job/PreCommit-HDFS-Build/25566/artifact/out/patch-compile-root.txt | | cc | https://builds.apache.org/job/PreCommit-HDFS-Build/25566/artifact/out/patch-compile-root.txt | | javac | https://builds.apache.org/job/PreCommit-HDFS-Build/25566/artifact/out/patch-compile-root.txt | | checkstyle | https://builds.apache.org/job/PreCommit-HDFS-Build/25566/artifact/out/diff-checkstyle-root.txt | | unit | https://builds.apache.org/job/PreCommit-HDFS-Build/25566/artifact/out/patch-unit-root.txt | | Test Results | https://builds.apache.org/job/PreCommit-HDFS-Build/25566/testReport/ | | Max. process+thread count | 308 (vs. ulimit of 10000) | | modules | C: hadoop-project-dist hadoop-common-project/hadoop-common hadoop-hdfs-project/hadoop-hdfs . U: . | | Console output | https://builds.apache.org/job/PreCommit-HDFS-Build/25566/console | | Powered by | Apache Yetus 0.8.0 http://yetus.apache.org | This message was automatically generated. > Support non-volatile storage class memory(SCM) in HDFS cache directives > ----------------------------------------------------------------------- > > Key: HDFS-13762 > URL: https://issues.apache.org/jira/browse/HDFS-13762 > Project: Hadoop HDFS > Issue Type: Improvement > Components: caching, datanode > Reporter: Sammi Chen > Assignee: Wei Zhou > Priority: Major > Attachments: HDFS-13762.000.patch, HDFS-13762.001.patch, > HDFS-13762.002.patch, SCMCacheDesign-2018-11-08.pdf, SCMCacheTestPlan.pdf > > > No-volatile storage class memory is a type of memory that can keep the data > content after power failure or between the power cycle. Non-volatile storage > class memory device usually has near access speed as memory DIMM while has > lower cost than memory. So today It is usually used as a supplement to > memory to hold long tern persistent data, such as data in cache. > Currently in HDFS, we have OS page cache backed read only cache and RAMDISK > based lazy write cache. Non-volatile memory suits for both these functions. > This Jira aims to enable storage class memory first in read cache. Although > storage class memory has non-volatile characteristics, to keep the same > behavior as current read only cache, we don't use its persistent > characteristics currently. > > > -- 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