Build failed in Jenkins: drill-scm #767

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See <https://builds.apache.org/job/drill-scm/767/changes>

Changes:

[asinha] DRILL-4846: Fix a few performance issues for metadata access:

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Started by an SCM change
[EnvInject] - Loading node environment variables.
Building remotely on ubuntu3 (Ubuntu ubuntu legacy-ubuntu) in workspace <https://builds.apache.org/job/drill-scm/ws/>
 > git rev-parse --is-inside-work-tree # timeout=10
Fetching changes from the remote Git repository
 > git config remote.origin.url https://git-wip-us.apache.org/repos/asf/drill.git # timeout=10
Fetching upstream changes from https://git-wip-us.apache.org/repos/asf/drill.git
 > git --version # timeout=10
 > git -c core.askpass=true fetch --tags --progress https://git-wip-us.apache.org/repos/asf/drill.git +refs/heads/*:refs/remotes/origin/*
 > git rev-parse refs/remotes/origin/master^{commit} # timeout=10
 > git rev-parse refs/remotes/origin/origin/master^{commit} # timeout=10
Checking out Revision 57dc9f43b6c578c1f90fb7f9e2495b184ab17b21 (refs/remotes/origin/master)
 > git config core.sparsecheckout # timeout=10
 > git checkout -f 57dc9f43b6c578c1f90fb7f9e2495b184ab17b21
 > git rev-list 0a4c21cc15329c063f256f6fbf2c4c69a90d9fa1 # timeout=10
FATAL: Couldn?t find any executable in /home/jenkins/tools/maven/apache-maven-3.3.3
Build step 'Invoke top-level Maven targets' marked build as failure
Archiving artifacts

Jenkins build is back to normal : drill-scm #768

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See <https://builds.apache.org/job/drill-scm/768/changes>