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Hi!
I am trying to switch from CDH 5.16 to BigTop 1.4. I am currently trying to upgrade on a test cluster with Debian 9.
We use Spark 2.4.4 with RPC encryption+auth enabled, relying on openssl's libcrypto capabilities. I noticed that with BigTop 1.4 hadoop checknative reports an error for openssl:
openssl: false EVP_CIPHER_CTX_encrypting
On Debian 9 we have both openssl 1.10 and 1.0.2 deployed, so we configured libcrypto in this way:
0 lrwxrwxrwx 1 root root 44 Feb 17 08:59 /usr/lib/x86_64-linux-gnu/libcrypto.so -> /usr/lib/x86_64-linux-gnu/libcrypto.so.1.0.2
We had to add this symlink on CDH since a versioned libcrypto.so is not picked up, and libssl-dev on Debian 9 creates a symlink to libcrypto1.1.0, not 1.0.2 (that was failing).
I see that EVP_CIPHER_CTX_encrypting seems guarded by a ifdef after https://issues.apache.org/jira/browse/BIGTOP-2932, so I guess that BigTop on Debian 9 builds against libssl1.1.0? (Still a bit ignorant, don't know how to check how things are build 
)
I tried to move the symlink to something like:
0 lrwxrwxrwx 1 root root 42 Feb 17 10:31 /usr/lib/x86_64-linux-gnu/libcrypto.so -> /usr/lib/x86_64-linux-gnu/libcrypto.so.1.1
And now checknative returns a different error:
openssl: false EVP_CIPHER_CTX_cleanup
The error in my opinion makes sense, since EVP_CIPHER_CTX_cleanup seems deprecated from openssl 1.1.0 onward. From the Hadoop mailing list I found this interesting thread, that shows the same problem:
The main issue is that the reporter mentions libssl1.1.1, not 1.1.0, that should be working with the aforementioned patch. Looking at the code I can see that EVP_CIPHER_CTX_cleanup is not guarded by any ifdef (in https://github.com/apache/hadoop/blob/branch-2.8.5/hadoop-common-project/hadoop-common/src/main/native/src/org/apache/hadoop/crypto/OpensslCipher.c), so the error kinda makes sense to me.
Am I missing something obvious or is there a bug somewhere between Hadoop and BigTop?
Thanks in advance!
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