[HDFS-8474] Impala compilation breaks with libhdfs in 2.7 as getJNIEnv is not visible

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Won't Fix
• Affects Version/s: 2.7.0
• Component/s: build, libhdfs

Environment

Red Hat Enterprise Linux Server release 6.4 and gcc 4.3.4

• Target Version/s: 2.7.1
• Assignee: Varun Saxena
• Reporter: Varun Saxena
• Created: 25/May/15 09:49
• Updated: 28/May/15 16:05
• Resolved: 28/May/15 16:05

Description

Impala in CDH 5.2.0 is not compiling with libhdfs.so in 2.7.0 on RedHat 6.4.
This is because getJNIEnv is not visible in the so file.

Compilation fails with below error message :
../../build/release/exec/libExec.a(hbase-table-scanner.cc.o): In function `impala::HBaseTableScanner::Init()':
/usr1/code/Impala/code/current/impala/be/src/exec/hbase-table-scanner.cc:113: undefined reference to `getJNIEnv'
../../build/release/exprs/libExprs.a(hive-udf-call.cc.o):/usr1/code/Impala/code/current/impala/be/src/exprs/hive-udf-call.cc:227: more undefined references to `getJNIEnv' follow
collect2: ld returned 1 exit status
make[3]: *** [be/build/release/service/impalad] Error 1
make[2]: *** [be/src/service/CMakeFiles/impalad.dir/all] Error 2
make[1]: *** [be/src/service/CMakeFiles/impalad.dir/rule] Error 2
make: *** [impalad] Error 2
Compiler Impala Failed, exit

libhdfs.so.0.0.0 returns nothing when following command is run.
"nm -D libhdfs.so.0.0.0 | grep getJNIEnv"

The change in HDFS-7879 breaks the backward compatibility of libhdfs although it can be argued that Impala shouldn't be using above API.

Issue Links

• is broken by: HDFS-7879 hdfs.dll does not export functions of the public libhdfs API