Github user mgaido91 commented on the issue: https://github.com/apache/spark/pull/19169 the error the build job is failing for is: ``` core/src/main/scala/org/apache/spark/io/CompressionCodec.scala:24: imported LZ4BlockInputStream' is permanently hidden by definition of object LZ4BlockInputStream in package io [warn] import net.jpountz.lz4.{LZ4BlockInputStream, LZ4BlockOutputStream} [warn] ^ [error] core/src/main/scala/org/apache/spark/io/CompressionCodec.scala:120: type mismatch; [error] found : Boolean [error] required: net.jpountz.lz4.LZ4FastDecompressor [error] new LZ4BlockInputStream(s, disableConcatenationOfByteStream) [error] ^ [info] Boolean <: net.jpountz.lz4.LZ4FastDecompressor? [info] false [warn] one warning found [error] one error found [error] (core/compile:compileIncremental) Compilation failed ``` this is not to be related to this PR. I am checking the reason which introduced the problem. Any idea? Thanks.
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