Josh Rosen created SPARK-27786:
----------------------------------
Summary: SHA1, MD5, and Base64 expression codegen doesn't work
when commons-codec is shaded
Key: SPARK-27786
URL: https://issues.apache.org/jira/browse/SPARK-27786
Project: Spark
Issue Type: Bug
Components: SQL
Affects Versions: 2.4.0
Reporter: Josh Rosen
Assignee: Josh Rosen
When running a custom build of Spark which shades {{commons-codec}}, the
{{sha1Hex}} expression generates code which doesn't compile:
{code}
org.apache.spark.sql.catalyst.expressions.codegen.CodeGenerator: failed to
compile: org.codehaus.commons.compiler.CompileException: File 'generated.java',
Line 47, Column 93: A method named "sha1Hex" is not declared in any enclosing
class nor any supertype, nor through a static import
{code}
The problem here is not in the generated code itself but, rather, is an issue
caused by an interaction between Spark's code generator and the shading: the
current code generator embeds
"org.apache.commons.codec.digest.DigestUtils.sha1Hex" into a larger codegen
template, preventing JarJarLinks from being able to replace it with the shaded
class's name. The generated code ends up using the unshaded name but the
unshaded dependency isn't on our classpath, triggering the above compilation
error.
To fix this problem and allow for proper shading, we can replace the hardcoded
string literal with {{classof[DigestUtils].getName}}
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
