Build failed in Jenkins: beam_PerformanceTests_JDBC #602

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GitHub pull request #5434 of commit 1039475aa2cac54f54520c565e318362cafa26b8, no merge conflicts.
Setting status of 1039475aa2cac54f54520c565e318362cafa26b8 to PENDING with url https://builds.apache.org/job/beam_PerformanceTests_JDBC/602/ and message: 'Build started sha1 is merged.'
Using context: Jenkins: Java JdbcIO Performance Test
[EnvInject] - Loading node environment variables.
Building remotely on beam11 (beam) in workspace <https://builds.apache.org/job/beam_PerformanceTests_JDBC/ws/>
 > git rev-parse --is-inside-work-tree # timeout=10
Fetching changes from the remote Git repository
 > git config remote.origin.url https://github.com/apache/beam.git # timeout=10
Fetching upstream changes from https://github.com/apache/beam.git
 > git --version # timeout=10
 > git fetch --tags --progress https://github.com/apache/beam.git +refs/heads/*:refs/remotes/origin/* +refs/pull/5434/*:refs/remotes/origin/pr/5434/*
 > git rev-parse refs/remotes/origin/pr/5434/merge^{commit} # timeout=10
 > git rev-parse refs/remotes/origin/origin/pr/5434/merge^{commit} # timeout=10
Checking out Revision 458259fa85309ce94d62551a947501dd98c8b91a (refs/remotes/origin/pr/5434/merge)
 > git config core.sparsecheckout # timeout=10
 > git checkout -f 458259fa85309ce94d62551a947501dd98c8b91a
Commit message: "Merge 1039475aa2cac54f54520c565e318362cafa26b8 into dfb94ea8694eb514945ff1615e20ff02685b11f1"
First time build. Skipping changelog.
Cleaning workspace
 > git rev-parse --verify HEAD # timeout=10
Resetting working tree
 > git reset --hard # timeout=10
 > git clean -fdx # timeout=10
[EnvInject] - Executing scripts and injecting environment variables after the SCM step.
[EnvInject] - Injecting as environment variables the properties content 
SPARK_LOCAL_IP=127.0.0.1

[EnvInject] - Variables injected successfully.
[beam_PerformanceTests_JDBC] $ /bin/bash -xe /tmp/jenkins7294799194451367235.sh
+ gcloud container clusters get-credentials io-datastores --zone=us-central1-a --verbosity=debug
DEBUG: Running [gcloud.container.clusters.get-credentials] with arguments: [--verbosity: "debug", --zone: "us-central1-a", NAME: "io-datastores"]
Fetching cluster endpoint and auth data.
DEBUG: Saved kubeconfig to /home/jenkins/.kube/config
kubeconfig entry generated for io-datastores.
INFO: Display format "default".
DEBUG: SDK update checks are disabled.
[beam_PerformanceTests_JDBC] $ /bin/bash -xe /tmp/jenkins55390770580633716.sh
+ cp /home/jenkins/.kube/config <https://builds.apache.org/job/beam_PerformanceTests_JDBC/ws/config-jdbcioit-1526904136153>
[beam_PerformanceTests_JDBC] $ /bin/bash -xe /tmp/jenkins2852560194620737971.sh
+ kubectl --kubeconfig=<https://builds.apache.org/job/beam_PerformanceTests_JDBC/ws/config-jdbcioit-1526904136153> create namespace jdbcioit-1526904136153
Error from server (AlreadyExists): namespaces "jdbcioit-1526904136153" already exists
Build step 'Execute shell' marked build as failure

Jenkins build is back to normal : beam_PerformanceTests_JDBC #603

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See <https://builds.apache.org/job/beam_PerformanceTests_JDBC/603/display/redirect>