Github user zellerh commented on a diff in the pull request:
https://github.com/apache/incubator-trafodion/pull/118#discussion_r41888824
--- Diff: core/sqf/sql/scripts/get_libhdfs_files ---
@@ -0,0 +1,186 @@
+#!/bin/sh
+
+# This script downloads and/or makes the required libhdfs files
+# to be able to build Trafodion, which acts as a libhdfs client.
+#
+# Basically, what we need are three files:
+#
+# hdfs.h (copied to $TGT_INC_DIR)
+# libhdfs.so (copied to $TGT_LIB_DIR)
+# libhadoop.so (copied to $TGT_LIB_DIR)
+
+# Working dir in the Trafodion source tree to extract and build libhdfs
files
+# (can be specified as an environment variable)
+if [[ -z ${LIBHDFS_TEMP_DIR} ]]; then
+ LIBHDFS_TEMP_DIR=${MY_SQROOT}/sql/libhdfs_files
+fi
+LOGFILE=${LIBHDFS_TEMP_DIR}/build.log
+
+# Hadoop source tar file to build libhdfs from
+HADOOP_SRC_MIRROR_URL=https://archive.apache.org/dist/hadoop/common/hadoop-2.6.0
+HADOOP_ID=hadoop-2.6.0
+HADOOP_SRC_ID=${HADOOP_ID}-src
+HADOOP_SRC_TAR=${HADOOP_SRC_ID}.tar.gz
+
--- End diff --
It might also have been because at some point Apache started to distribute
the 64 bit native library in the binary distribution - that would not be a
strong reason of course, since we are building the library here anyway.
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