12:56 a.m.
MIchael Yates created JGRP-1550:
-----------------------------------
Summary: 2.6.22.Final not running on 1.6 JVM
Key: JGRP-1550
URL: https://issues.jboss.org/browse/JGRP-1550
Project: JGroups
Issue Type: Bug
Affects Versions: 2.6.21
Environment: JVM 1.6
Reporter: MIchael Yates
Assignee: Bela Ban
2.6.22 has been built using JDK 7
#A dump from a 2.6.21 class
hexdump -n20 ./org/jgroups/MembershipListener.class
0000000 ca fe ba be 00 00 00 32 00 0d 07 00 0b 07 00 0c
#A dump from a 2.6.22 class
hexdump -n20 ./org/jgroups/MembershipListener.class
0000000 ca fe ba be 00 00 00 33 00 0d 07 00 0b 07 00 0c
Note the 8th octet has changed form 32 to 33. ie from JVM6 to JVM7
I suspect this is an oversight when 2.6.22 was built. Maybe -source and -target parameters
forgotten on the build?
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8:59 a.m.
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Bela Ban updated JGRP-1550:
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Fix Version/s: 3.3
Hmm, I'm using -source 1.5, which should also set -target 1.5 automatically...
I'll have a look. Meanwhile, build your own JAR using label JGroups_2_6_22_Final.
I changed the current build.xml on master to include -target="1.6", so that my
JDK 7 based environment will create correct JARs to be used with JDK 1.6
2.6.22.Final not running on 1.6 JVM
-----------------------------------
Key: JGRP-1550
URL: https://issues.jboss.org/browse/JGRP-1550
Project: JGroups
Issue Type: Bug
Affects Versions: 2.6.21
Environment: JVM 1.6
Reporter: MIchael Yates
Assignee: Bela Ban
Fix For: 3.3
2.6.22 has been built using JDK 7
#A dump from a 2.6.21 class
hexdump -n20 ./org/jgroups/MembershipListener.class
0000000 ca fe ba be 00 00 00 32 00 0d 07 00 0b 07 00 0c
#A dump from a 2.6.22 class
hexdump -n20 ./org/jgroups/MembershipListener.class
0000000 ca fe ba be 00 00 00 33 00 0d 07 00 0b 07 00 0c
Note the 8th octet has changed form 32 to 33. ie from JVM6 to JVM7
I suspect this is an oversight when 2.6.22 was built. Maybe -source and -target
parameters forgotten on the build?
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7:56 p.m.
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MIchael Yates commented on JGRP-1550:
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I am not sure if it helps track down what went wrong but there are a few other anomalies
with this release as well.
- no release notes available here:
https://issues.jboss.org/secure/ConfigureReleaseNote.jspa?projectId=10053
- 21 is labelled 2.6.21.FINAL whilst 22 is labelled 2.6.22.Final. Note the difference in
capitalisation.
Certainly I am not saying that these things are the cause. Just noticing that there seem
to be other differences in this 2.6.22 release vs the 2.6.21 release.
I am yet to try your suggestion of building my own version of the jar - but feel fairly
comfortable it will be a suitable workaround for our situation.
2.6.22.Final not running on 1.6 JVM
-----------------------------------
Key: JGRP-1550
URL: https://issues.jboss.org/browse/JGRP-1550
Project: JGroups
Issue Type: Bug
Affects Versions: 2.6.21
Environment: JVM 1.6
Reporter: MIchael Yates
Assignee: Bela Ban
Fix For: 3.3
2.6.22 has been built using JDK 7
#A dump from a 2.6.21 class
hexdump -n20 ./org/jgroups/MembershipListener.class
0000000 ca fe ba be 00 00 00 32 00 0d 07 00 0b 07 00 0c
#A dump from a 2.6.22 class
hexdump -n20 ./org/jgroups/MembershipListener.class
0000000 ca fe ba be 00 00 00 33 00 0d 07 00 0b 07 00 0c
Note the 8th octet has changed form 32 to 33. ie from JVM6 to JVM7
I suspect this is an oversight when 2.6.22 was built. Maybe -source and -target
parameters forgotten on the build?
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10:52 p.m.
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MIchael Yates commented on JGRP-1550:
-------------------------------------
In fact the code I pull at that label contains the following
--
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.5</source>
<target>1.5</target>
<excludes>
<exclude>org/jgroups/util/JUnitXMLReporter.java</exclude>
<exclude>org/jgroups/demos/**</exclude>
</excludes>
</configuration>
--
And therefor produces (after some additions to the pom) classes with 31 major version
hexdump -n20 ./org/jgroups/MembershipListener.class
0000000 ca fe ba be 00 00 00 31 00 0d 07 00 0b 07 00 0c
Maybe when the build was done there was a partially edited version of the main pom checked
out?
2.6.22.Final not running on 1.6 JVM
-----------------------------------
Key: JGRP-1550
URL: https://issues.jboss.org/browse/JGRP-1550
Project: JGroups
Issue Type: Bug
Affects Versions: 2.6.21
Environment: JVM 1.6
Reporter: MIchael Yates
Assignee: Bela Ban
Fix For: 3.3
2.6.22 has been built using JDK 7
#A dump from a 2.6.21 class
hexdump -n20 ./org/jgroups/MembershipListener.class
0000000 ca fe ba be 00 00 00 32 00 0d 07 00 0b 07 00 0c
#A dump from a 2.6.22 class
hexdump -n20 ./org/jgroups/MembershipListener.class
0000000 ca fe ba be 00 00 00 33 00 0d 07 00 0b 07 00 0c
Note the 8th octet has changed form 32 to 33. ie from JVM6 to JVM7
I suspect this is an oversight when 2.6.22 was built. Maybe -source and -target
parameters forgotten on the build?
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2:12 a.m.
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Bela Ban commented on JGRP-1550:
--------------------------------
I never use the maven build; I always use ant: ./build.sh clean jar
2.6.22.Final not running on 1.6 JVM
-----------------------------------
Key: JGRP-1550
URL: https://issues.jboss.org/browse/JGRP-1550
Project: JGroups
Issue Type: Bug
Affects Versions: 2.6.21
Environment: JVM 1.6
Reporter: MIchael Yates
Assignee: Bela Ban
Fix For: 3.3
2.6.22 has been built using JDK 7
#A dump from a 2.6.21 class
hexdump -n20 ./org/jgroups/MembershipListener.class
0000000 ca fe ba be 00 00 00 32 00 0d 07 00 0b 07 00 0c
#A dump from a 2.6.22 class
hexdump -n20 ./org/jgroups/MembershipListener.class
0000000 ca fe ba be 00 00 00 33 00 0d 07 00 0b 07 00 0c
Note the 8th octet has changed form 32 to 33. ie from JVM6 to JVM7
I suspect this is an oversight when 2.6.22 was built. Maybe -source and -target
parameters forgotten on the build?
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4 comments
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participants (2)
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Bela Ban (JIRA) -
MIchael Yates (JIRA)