[ https://issues.apache.org/jira/browse/HIVE-18269?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16317742#comment-16317742 ]
Hive QA commented on HIVE-18269: -------------------------------- | (x) *{color:red}-1 overall{color}* | \\ \\ || Vote || Subsystem || Runtime || Comment || || || || || {color:brown} Prechecks {color} || | {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue} 0m 0s{color} | {color:blue} Findbugs executables are not available. {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:brown} master Compile Tests {color} || | {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue} 1m 28s{color} | {color:blue} Maven dependency ordering for branch {color} | | {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 5m 33s{color} | {color:green} master passed {color} | | {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m 28s{color} | {color:green} master passed {color} | | {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 1m 2s{color} | {color:green} master passed {color} | | {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m 16s{color} | {color:green} master passed {color} | || || || || {color:brown} Patch Compile Tests {color} || | {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue} 0m 21s{color} | {color:blue} Maven dependency ordering for patch {color} | | {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 1m 57s{color} | {color:green} the patch passed {color} | | {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m 31s{color} | {color:green} the patch passed {color} | | {color:green}+1{color} | {color:green} javac {color} | {color:green} 1m 30s{color} | {color:green} the patch passed {color} | | {color:red}-1{color} | {color:red} checkstyle {color} | {color:red} 0m 32s{color} | {color:red} ql: The patch generated 6 new + 118 unchanged - 8 fixed = 124 total (was 126) {color} | | {color:red}-1{color} | {color:red} checkstyle {color} | {color:red} 0m 13s{color} | {color:red} llap-server: The patch generated 4 new + 250 unchanged - 4 fixed = 254 total (was 254) {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} javadoc {color} | {color:green} 1m 15s{color} | {color:green} the patch passed {color} | || || || || {color:brown} Other Tests {color} || | {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m 12s{color} | {color:green} The patch does not generate ASF License warnings. {color} | | {color:black}{color} | {color:black} {color} | {color:black} 17m 41s{color} | {color:black} {color} | \\ \\ || Subsystem || Report/Notes || | Optional Tests | asflicense javac javadoc findbugs checkstyle compile | | uname | Linux hiveptest-server-upstream 3.16.0-4-amd64 #1 SMP Debian 3.16.36-1+deb8u1 (2016-09-03) x86_64 GNU/Linux | | Build tool | maven | | Personality | /data/hiveptest/working/yetus/dev-support/hive-personality.sh | | git revision | master / 8412748 | | Default Java | 1.8.0_111 | | checkstyle | http://104.198.109.242/logs//PreCommit-HIVE-Build-8514/yetus/diff-checkstyle-ql.txt | | checkstyle | http://104.198.109.242/logs//PreCommit-HIVE-Build-8514/yetus/diff-checkstyle-llap-server.txt | | modules | C: common ql llap-server U: . | | Console output | http://104.198.109.242/logs//PreCommit-HIVE-Build-8514/yetus.txt | | Powered by | Apache Yetus http://yetus.apache.org | This message was automatically generated. > LLAP: Fast llap io with slow processing pipeline can lead to OOM > ---------------------------------------------------------------- > > Key: HIVE-18269 > URL: https://issues.apache.org/jira/browse/HIVE-18269 > Project: Hive > Issue Type: Bug > Affects Versions: 3.0.0 > Reporter: Prasanth Jayachandran > Assignee: Sergey Shelukhin > Attachments: HIVE-18269.01.patch, HIVE-18269.02.patch, > HIVE-18269.03.patch, HIVE-18269.1.patch, HIVE-18269.bad.patch, Screen Shot > 2017-12-13 at 1.15.16 AM.png > > > pendingData linked list in Llap IO elevator (LlapRecordReader.java) may grow > indefinitely when Llap IO is faster than processing pipeline. Since we don't > have backpressure to slow down the IO, this can lead to indefinite growth of > pending data leading to severe GC pressure and eventually lead to OOM. > This specific instance of LLAP was running on HDFS on top of EBS volume > backed by SSD. The query that triggered this is issue was ANALYZE STATISTICS > .. FOR COLUMNS which also gather bitvectors. Fast IO and Slow processing case. -- This message was sent by Atlassian JIRA (v6.4.14#64029)