Aaron Ploetz created CASSANDRA-14926:
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Summary: OpenJDK - Using 1.8.0 "adoptopenjdk" throws error from
command line
Key: CASSANDRA-14926
URL: https://issues.apache.org/jira/browse/CASSANDRA-14926
Project: Cassandra
Issue Type: Bug
Components: Configuration
Reporter: Aaron Ploetz
Assignee: Aaron Ploetz
Fix For: 4.x
When testing with a recent build of 4.0, I noticed that Cassandra commands from
my Mac (nodetool, bin/cassandra) was throwing a Bash syntax error:
{{bin/cassandra.in.sh: line 115: [: 1.8.0: integer expression expected}}
The offending line (115 in cassandra.in.sh) is this:
{{if [ "$JVM_PATCH_VERSION" -lt 151 ] ; then}}
Essentially, the patch version of the JDK is being parsed and then verified to
be higher than 1.8.0_151. The value of $JVM_PATCH_VERSION is assumed to be
numeric. Further investigation revealed this to be specific to the OpenJDK
version on my Mac (our test CentOS clusters are fine).
On CentOS, the JDK version reads like this:
{{}}{{$ java -version
openjdk version "1.8.0_191"
OpenJDK Runtime Environment (build 1.8.0_191-b12)
OpenJDK 64-Bit Server VM (build 25.191-b12, mixed mode)}}
{{}}But when I check the JDK version on my Mac, I see this:
{{$ java -version
openjdk version "1.8.0-adoptopenjdk"
OpenJDK Runtime Environment (build
1.8.0-adoptopenjdk-jenkins_2018_05_19_02_01-b00)
OpenJDK 64-Bit Server VM (build 25.71-b00, mixed mode)}}
This output causes the $JVM_PATCH_VERSION to resolve to "1.8.0." Obviously not
a valid integer.
I messed around with adding an extra if-check prior to the line in-question:
{{if [[ "$JVM_PATCH_VERSION" =~ ^[0-9]+$ ]] ; then}}
This suppresses the error, but doesn't really validate an adequate patch level
(which is the true goal here). The problem with this OpenJDK version, is that
we'd have to take a different approach in obtaining the patch version. I
wonder how prevalent the "adoptopenjdk" versions are out there to begin with,
and if simply suppressing this error is fine for this edge case? Or is it
worth the extra digging to pull in the patch version in this case?
Note: This is not an issue prior to 4.0, due to the changes made in the
cassandra.in.sh file.
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