[BIGTOP-3508] Sqoop bin script doesn't work on Debian 10 if libslf4j-java is installed

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.5.0
• Fix Version/s: 3.0.0
• Assignee: Luca Toscano
• Reporter: Luca Toscano
• Created: 22/Feb/21 11:01
• Updated: 01/Mar/21 15:10
• Resolved: 01/Mar/21 15:09

Description

Hi everybody,

The sqoop's default bin script (created via install_sqoop.sh afaics) leads to the following error on Debian 10 if libslf4j-java is installed:

 SLF4J: Class path contains multiple SLF4J bindings.
 SLF4J: Found binding in [jar:file:/usr/lib/hadoop/lib/slf4j-log4j12-1.7.25.jar!/org/slf4j/impl/StaticLoggerBinder.class]
 SLF4J: Found binding in [jar:file:/usr/share/java/maven3-slf4j-provider.jar!/org/slf4j/impl/StaticLoggerBinder.class]
 SLF4J: Found binding in [jar:file:/usr/share/java/slf4j-jcl.jar!/org/slf4j/impl/StaticLoggerBinder.class]
 SLF4J: Found binding in [jar:file:/usr/share/java/slf4j-jdk14.jar!/org/slf4j/impl/StaticLoggerBinder.class]
 SLF4J: Found binding in [jar:file:/usr/share/java/slf4j-log4j12.jar!/org/slf4j/impl/StaticLoggerBinder.class]
 SLF4J: Found binding in [jar:file:/usr/share/java/slf4j-nop.jar!/org/slf4j/impl/StaticLoggerBinder.class]
 SLF4J: Found binding in [jar:file:/usr/share/java/slf4j-simple.jar!/org/slf4j/impl/StaticLoggerBinder.class]
 SLF4J: Found binding in [jar:file:/usr/lib/hive/lib/log4j-slf4j-impl-2.6.2.jar!/org/slf4j/impl/StaticLoggerBinder.class]
 SLF4J: See [http://www.slf4j.org/codes.html#multiple_bindings] for an explanation.
 SLF4J: Detected both log4j-over-slf4j.jar AND bound slf4j-log4j12.jar on the class path, preempting StackOverflowError. 
 SLF4J: See also [http://www.slf4j.org/codes.html#log4jDelegationLoop] for more details.
 Exception in thread "main" java.lang.ExceptionInInitializerError
 at org.slf4j.impl.StaticLoggerBinder.<init>(StaticLoggerBinder.java:72)
 at org.slf4j.impl.StaticLoggerBinder.<clinit>(StaticLoggerBinder.java:45)
 at org.slf4j.LoggerFactory.bind(LoggerFactory.java:150)
 at org.slf4j.LoggerFactory.performInitialization(LoggerFactory.java:124)
 at org.slf4j.LoggerFactory.getILoggerFactory(LoggerFactory.java:412)
 at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:357)
 at org.apache.commons.logging.impl.SLF4JLogFactory.getInstance(SLF4JLogFactory.java:155)
 at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:671)
 at org.apache.sqoop.Sqoop.<clinit>(Sqoop.java:42)
 Caused by: java.lang.IllegalStateException: Detected both log4j-over-slf4j.jar AND bound slf4j-log4j12.jar on the class path, preempting StackOverflowError. See also [http://www.slf4j.org/codes.html#log4jDelegationLoop] for more details.
 at org.slf4j.impl.Log4jLoggerFactory.<clinit>(Log4jLoggerFactory.java:54)
 ... 9 more

The issue seems to be this bit of code:

 SQOOP_JARS=\`ls /var/lib/sqoop/*.jar /usr/share/java/*.jar 2>/dev/null\`

Since it blindly loads jars from /usr/share/java, and on Debian 10 I have:

 elukey@stat1004:~$ ls /var/lib/sqoop/*.jar /usr/share/java/*.jar 2>/dev/null | tr " " "\n" | grep log4j
 /usr/share/java/log4j-over-slf4j-1.7.25.jar
 /usr/share/java/log4j-over-slf4j.jar
 /usr/share/java/slf4j-log4j12-1.7.25.jar
 /usr/share/java/slf4j-log4j12.jar

If I remove `/usr/share/java/log4j-over-slf4j.jar` the issue is gone, since the /usr/share/java/log4j-over-slf4j-1.7.25.jar is a symlink to it. The jars are brought by the libslf4j-java package.

I added a more detailed description in https://phabricator.wikimedia.org/T274866#6843187.

Should we filter the SQOOP_JARS jar list for this use case, or do you have a better idea?

Thanks in advance

Issue Links

• links to: GitHub Pull Request #745