Hi All, Spark master build hangs using parallel build option in maven. On running build the sequentially on spark master using maven, build did not hang. This issue occurs on giving hadoop-provided (*-Phadoop-provided -Dhadoop.version=2.8.5) *option. Same command works fine to build spark-2.4.3 parallelly
*Command to build spark master sequentially - *Spark build works fine build/mvn -Duse.zinc.server=false -DuseZincForJdk8=false -Dmaven.javadoc.skip=true -DskipSource=true -Phive -Phive-thriftserver -Phive-provided -Pyarn -Phadoop-provided -Dhadoop.version=2.8.5 -DskipTests=true clean package *Command to build spark master parallel - *spark build hangs build/mvn -X -Duse.zinc.server=false -DuseZincForJdk8=false -Dmaven.javadoc.skip=true -DskipSource=true -Phive -Phive-thriftserver -Phive-provided -Pyarn -Phadoop-provided -Dhadoop.version=2.8.5 -DskipTests=true -T 4 clean package This is the trace which keeps on repeating in maven logs [DEBUG] building maven31 dependency graph for org.apache.spark:spark-network-yarn_2.12:jar:3.0.0-SNAPSHOT with Maven31DependencyGraphBuilder [DEBUG] Dependency collection stats: {ConflictMarker.analyzeTime=60583, ConflictMarker.markTime=23750, ConflictMarker.nodeCount=419, ConflictIdSorter.graphTime=41262, ConflictIdSorter.topsortTime=9704, ConflictIdSorter.conflictIdCount=105, ConflictIdSorter.conflictIdCycleCount=0, ConflictResolver.totalTime=632542, ConflictResolver.conflictItemCount=193, DefaultDependencyCollector.collectTime=1020759, DefaultDependencyCollector.transformTime=775495} [DEBUG] org.apache.spark:spark-network-yarn_2.12:jar:3.0.0-SNAPSHOT [DEBUG] org.apache.spark:spark-network-shuffle_2.12:jar:3.0.0-SNAPSHOT:compile [DEBUG] org.apache.spark:spark-network-common_2.12:jar:3.0.0-SNAPSHOT:compile [DEBUG] io.netty:netty-all:jar:4.1.42.Final:compile (version managed from 4.1.42.Final) [DEBUG] org.apache.commons:commons-lang3:jar:3.9:compile (version managed from 3.9) [DEBUG] org.fusesource.leveldbjni:leveldbjni-all:jar:1.8:compile (version managed from 1.8) [DEBUG] com.fasterxml.jackson.core:jackson-databind:jar:2.10.0:compile (version managed from 2.10.0) [DEBUG] com.fasterxml.jackson.core:jackson-core:jar:2.10.0:compile (version managed from 2.10.0) [DEBUG] com.fasterxml.jackson.core:jackson-annotations:jar:2.10.0:compile (version managed from 2.10.0) [DEBUG] com.google.code.findbugs:jsr305:jar:3.0.0:compile (version managed from 3.0.0) [DEBUG] com.google.guava:guava:jar:14.0.1:provided (scope managed from compile) (version managed from 14.0.1) [DEBUG] org.apache.commons:commons-crypto:jar:1.0.0:compile (version managed from 1.0.0) (exclusions managed from [net.java.dev.jna:jna:*:*]) [DEBUG] io.dropwizard.metrics:metrics-core:jar:4.1.1:compile (version managed from 4.1.1) [DEBUG] org.apache.spark:spark-tags_2.12:jar:3.0.0-SNAPSHOT:test [DEBUG] org.scala-lang:scala-library:jar:2.12.10:compile (version managed from 2.12.10) [DEBUG] org.apache.spark:spark-tags_2.12:jar:tests:3.0.0-SNAPSHOT:test [DEBUG] org.apache.hadoop:hadoop-client:jar:2.8.5:provided (exclusions managed from [org.fusesource.leveldbjni:leveldbjni-all:*:*, asm:asm:*:*, org.codehaus.jackson:jackson-mapper-asl:*:*, org.ow2.asm:asm:*:*, org.jboss.netty:netty:*:*, io.netty:netty:*:*, commons-beanutils:commons-beanutils-core:*:*, commons-logging:commons-logging:*:*, org.mockito:mockito-all:*:*, org.mortbay.jetty:servlet-api-2.5:*:*, javax.servlet:servlet-api:*:*, junit:junit:*:*, com.sun.jersey:*:*:*, com.sun.jersey.jersey-test-framework:*:*:*, com.sun.jersey.contribs:*:*:*, net.java.dev.jets3t:jets3t:*:*, javax.ws.rs:jsr311-api:*:*, org.eclipse.jetty:jetty-webapp:*:*]) [DEBUG] org.apache.hadoop:hadoop-common:jar:2.8.5:provided [DEBUG] com.hadoop.gplcompression:hadoop-lzo:jar:0.4.19:provided [DEBUG] commons-cli:commons-cli:jar:1.2:provided [DEBUG] org.apache.commons:commons-math3:jar:3.4.1:provided (version managed from 3.1.1) [DEBUG] org.apache.httpcomponents:httpclient:jar:4.5.6:provided (version managed from 4.5.2) [DEBUG] org.apache.httpcomponents:httpcore:jar:4.4.12:provided (version managed from 4.4.10) [DEBUG] commons-codec:commons-codec:jar:1.10:provided (version managed from 1.11) [DEBUG] commons-io:commons-io:jar:2.4:provided (version managed from 2.5) [DEBUG] commons-net:commons-net:jar:3.1:provided (version managed from 3.6) [DEBUG] commons-collections:commons-collections:jar:3.2.2:provided (version managed from 3.2.2) [DEBUG] org.eclipse.jetty:jetty-servlet:jar:9.4.18.v20190429:provided (scope managed from compile) (version managed from 9.3.19.v20170502) [DEBUG] org.eclipse.jetty:jetty-security:jar:9.4.18.v20190429:provided (scope managed from compile) (version managed from 9.4.18.v20190429) [DEBUG] javax.servlet.jsp:jsp-api:jar:2.1:provided [DEBUG] log4j:log4j:jar:1.2.17:provided (scope managed from compile) (version managed from 1.2.17) [DEBUG] commons-lang:commons-lang:jar:2.6:provided (version managed from 2.6) [DEBUG] commons-beanutils:commons-beanutils:jar:1.9.4:provided (version managed from 1.9.3) [DEBUG] org.apache.commons:commons-configuration2:jar:2.1.1:provided [DEBUG] org.apache.avro:avro:jar:1.8.2:provided (version managed from 1.7.7) [DEBUG] org.codehaus.jackson:jackson-core-asl:jar:1.9.13:provided (scope managed from compile) (version managed from 1.9.13) [DEBUG] com.thoughtworks.paranamer:paranamer:jar:2.8:runtime (scope managed from compile) (version managed from 2.7) [DEBUG] org.xerial.snappy:snappy-java:jar:1.1.7.3:provided (version managed from 1.1.1.3) [DEBUG] org.tukaani:xz:jar:1.5:provided [DEBUG] com.google.re2j:re2j:jar:1.1:provided [DEBUG] com.google.protobuf:protobuf-java:jar:2.5.0:provided (scope managed from compile) (version managed from 2.5.0) [DEBUG] com.google.code.gson:gson:jar:2.2.4:provided [DEBUG] org.apache.hadoop:hadoop-auth:jar:2.8.5:provided [DEBUG] com.nimbusds:nimbus-jose-jwt:jar:4.41.1:provided [DEBUG] com.github.stephenc.jcip:jcip-annotations:jar:1.0-1:provided [DEBUG] net.minidev:json-smart:jar:2.3:provided [DEBUG] net.minidev:accessors-smart:jar:1.2:provided [DEBUG] org.apache.curator:curator-framework:jar:2.7.1:provided (version managed from 2.12.0) [DEBUG] org.apache.curator:curator-client:jar:2.7.1:provided (version managed from 2.12.0) [DEBUG] org.apache.curator:curator-recipes:jar:2.7.1:provided (scope managed from compile) (version managed from 2.12.0) (exclusions managed from []) [DEBUG] org.apache.htrace:htrace-core4:jar:4.1.0-incubating:provided [DEBUG] org.apache.commons:commons-compress:jar:1.4.1:provided [DEBUG] org.apache.kerby:kerb-simplekdc:jar:1.0.1:provided [DEBUG] org.apache.kerby:kerb-client:jar:1.0.1:provided [DEBUG] org.apache.kerby:kerby-config:jar:1.0.1:provided [DEBUG] org.apache.kerby:kerb-core:jar:1.0.1:provided [DEBUG] org.apache.kerby:kerby-pkix:jar:1.0.1:provided [DEBUG] org.apache.kerby:kerby-asn1:jar:1.0.1:provided [DEBUG] org.apache.kerby:kerby-util:jar:1.0.1:provided [DEBUG] org.apache.kerby:kerb-common:jar:1.0.1:provided [DEBUG] org.apache.kerby:kerb-crypto:jar:1.0.1:provided [DEBUG] org.apache.kerby:kerb-util:jar:1.0.1:provided [DEBUG] org.apache.kerby:token-provider:jar:1.0.1:provided [DEBUG] org.apache.kerby:kerb-admin:jar:1.0.1:provided [DEBUG] org.apache.kerby:kerb-server:jar:1.0.1:provided [DEBUG] org.apache.kerby:kerb-identity:jar:1.0.1:provided [DEBUG] org.apache.kerby:kerby-xdr:jar:1.0.1:provided [DEBUG] org.codehaus.woodstox:stax2-api:jar:3.1.4:provided [DEBUG] com.fasterxml.woodstox:woodstox-core:jar:5.0.3:provided [DEBUG] org.apache.hadoop:hadoop-hdfs-client:jar:2.8.5:provided [DEBUG] com.squareup.okhttp:okhttp:jar:2.7.5:provided [DEBUG] com.squareup.okio:okio:jar:1.6.0:provided [DEBUG] org.apache.hadoop:hadoop-yarn-api:jar:2.8.5:provided (scope managed from compile) (version managed from 2.8.5) (exclusions managed from [org.apache.hadoop:hadoop-annotations:*:*, com.google.inject:guice:*:*, com.sun.jersey.jersey-test-framework:jersey-test-framework-grizzly2:*:*, com.sun.jersey:jersey-server:*:*, com.sun.jersey.contribs:jersey-guice:*:*, com.google.inject.extensions:guice-servlet:*:*, org.apache.avro:avro:*:*, com.sun.jersey:jersey-core:*:*, com.sun.jersey:jersey-json:*:*, io.netty:netty:*:*]) [DEBUG] javax.xml.bind:jaxb-api:jar:2.2.11:provided [DEBUG] com.googlecode.json-simple:json-simple:jar:1.1.1:provided [DEBUG] org.apache.hadoop:hadoop-yarn-client:jar:2.8.5:provided (scope managed from compile) (version managed from 2.8.5) (exclusions managed from [org.apache.hadoop:hadoop-yarn-api:*:*, org.apache.hadoop:hadoop-yarn-common:*:*, org.apache.hadoop:hadoop-annotations:*:*, com.google.guava:guava:*:*, commons-cli:commons-cli:*:*, log4j:log4j:*:*, com.sun.jersey:jersey-core:*:*, com.sun.jersey:jersey-server:*:*, com.sun.jersey:jersey-json:*:*, com.sun.jersey:jersey-servlet:*:*, io.netty:netty:*:*, com.google.inject.extensions:guice-servlet:*:*]) [DEBUG] org.apache.hadoop:hadoop-mapreduce-client-core:jar:2.8.5:provided [DEBUG] org.apache.hadoop:hadoop-yarn-common:jar:2.8.5:provided (scope managed from compile) (version managed from 2.8.5) (exclusions managed from []) [DEBUG] javax.servlet:javax.servlet-api:jar:3.1.0:provided [DEBUG] org.eclipse.jetty:jetty-util:jar:9.4.18.v20190429:provided (scope managed from compile) (version managed from 9.3.19.v20170502) [DEBUG] com.fasterxml.jackson.module:jackson-module-jaxb-annotations:jar:2.10.0:provided (version managed from 2.7.8) [DEBUG] jakarta.xml.bind:jakarta.xml.bind-api:jar:2.3.2:provided [DEBUG] jakarta.activation:jakarta.activation-api:jar:1.2.1:provided [DEBUG] com.fasterxml.jackson.jaxrs:jackson-jaxrs-json-provider:jar:2.7.8:provided [DEBUG] com.fasterxml.jackson.jaxrs:jackson-jaxrs-base:jar:2.7.8:provided [DEBUG] org.apache.hadoop:hadoop-mapreduce-client-jobclient:jar:2.8.5:provided [DEBUG] org.apache.hadoop:hadoop-mapreduce-client-common:jar:2.8.5:provided [DEBUG] org.apache.hadoop:hadoop-annotations:jar:2.8.5:provided [DEBUG] org.slf4j:slf4j-api:jar:1.7.16:provided [DEBUG] org.spark-project.spark:unused:jar:1.0.0:compile [DEBUG] org.scalatest:scalatest_2.12:jar:3.0.8:test [DEBUG] org.scalactic:scalactic_2.12:jar:3.0.8:test [DEBUG] org.scala-lang:scala-reflect:jar:2.12.10:test (version managed from 2.12.8) [DEBUG] org.scala-lang.modules:scala-xml_2.12:jar:1.2.0:test (version managed from 1.2.0) [DEBUG] junit:junit:jar:4.12:test [DEBUG] org.hamcrest:hamcrest-core:jar:1.3:test (scope managed from compile) (version managed from 1.3) [DEBUG] com.novocode:junit-interface:jar:0.11:test [DEBUG] org.scala-sbt:test-interface:jar:1.0:test [DEBUG] updateExcludesInDeps() I'll be very grateful if someone could help. Regards Saurabh Chawla