Hi all I found a weird problem when executing 'mvn dependency:tree -pl=phoenix-core'. It shows that we depends on both antlr-3.5.jar and antlr-2.7.7.jar.
[INFO] org.apache.phoenix:phoenix-core:jar:4.6-adh6u-SNAPSHOT [INFO] +- org.antlr:antlr:jar:3.5:compile [INFO] | \- org.antlr:ST4:jar:4.0.7:compile [INFO] +- org.antlr:antlr-runtime:jar:3.5:compile [INFO] | \- org.antlr:stringtemplate:jar:3.2.1:compile [INFO] | \- antlr:antlr:jar:2.7.7:compile Then we have both antlr 3.5 and 2.7.7. Has anyone ever noticed this? I checked the phoenix-4.6.0-HBase-1.1-client.jar, it contains both antlr 3.5 and 2.7.7 too. Fortunately they have different package name and will not cause unexpected problems. I found the following issues in Antlr's community: https://github.com/antlr/stringtemplate4/issues/51 https://github.com/antlr/antlr3/issues/75 It seems that it is a known issue and has not been solved and never will be for antlr 3. I don't whether it sill exists in antlr 4. I searched the source code and generated source code and i failed to find explicit import for classes in antlr-*.jar, but only antlr-runtime. Is antlr 3.5 necessary for phoenix? I did the following things: 1. remove antlr 3.5 dependency from pom 2. add exclusion of stringtemplate for antlr-runtime (so it will not have the transit dependency of antlr 2.7.7) Then, both antlr 3.5 and antlr 2.7.7 disappeared. After that, all IT/UTs passed. Everything seems to be fine. So, am I right? Is it safe to remove antlr 3.5 dependency?
