Github user xndai commented on a diff in the pull request:
https://github.com/apache/orc/pull/142#discussion_r130473949
--- Diff: c++/src/CMakeLists.txt ---
@@ -125,6 +125,83 @@ include_directories (
${LZ4_INCLUDE_DIRS}
)
+# To avoid reading the Timezone database from disk, we load the file
during the
+# build and inject them as binary into the library. This can increase the
size
+# of library but avoids doing system calls at runtime. The behavior can be
+# disabled by using the CMake flag NO_EMBEDDED_TZ_DB
+if (NOT DEFINED EMBEDDED_TZ_DB)
+ set(EMBEDDED_TZ_DB ON)
--- End diff --
A side effect of this is when the time zone info files are updated, the Orc
lib has to be recompiled and redistributed.
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