Github user interma commented on a diff in the pull request:
https://github.com/apache/incubator-hawq/pull/1274#discussion_r131583257
--- Diff: depends/libhdfs3/src/client/CryptoCodec.cpp ---
@@ -119,33 +119,38 @@ namespace Hdfs {
return -1;
}
- //calculate new IV when appending a existed file
+ // Calculate iv and counter in order to init cipher context
with cipher method. Default value is 0.
+ resetStreamOffset(crypto_method, stream_offset);
+
+ LOG(DEBUG3, "CryptoCodec init success, length of the decrypted
key is : %llu, crypto method is : %d", AlgorithmBlockSize, crypto_method);
+ is_init = true;
+ return 1;
+
+ }
+
+ int CryptoCodec::resetStreamOffset(CryptoMethod crypto_method, int64_t
stream_offset) {
+ // Calculate new IV when appending an existed file.
--- End diff --
check `is_init`: if not initialized yet, return -1
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