External library requirements - connect_cdc_sqdata - Latest

When the Apply or Replicator Engine starts it begins by loading or attempting to load a variety of external libraries. Some like libicuuc.so also known as the "ICU" library should be part of every base linux system installation while others like libasan.so the "AddressSanitizer" may be installation standards. The librdkafka library is loaded during Engine startup when the Engine processes the kafka:// target datastore URL. If your installation utilizes a librdkafka build containing site specific dependencies you may encounter the following error:

SQD0136E (1) Error encountered in function REPLICATE, parameter 

This could be caused by a variety of factors however the first thing to look at should be the engine diagnostic log, named depending on what you are executing sqdeng_nnnn.log, sqdata_nnnn.log or sqdrpl_nnnn.log where the nnnn represents the process-id of the failed engine. In that log you may find something like the following, indicating which library is missing:

00000410 2022-11-18 08:57:32 4138159 45caf4c0 [   KAFKA] :kafka_open_producer -->
00000411 2022-11-18 08:57:32 4138159 45caf4c0 [DLLKAFKA] :dllkafka_load -->
00000412 2022-11-18 08:57:32 4138159 45caf4c0 [DLLKAFKA] :Try loading /hosting/lib/lib/librdkafka.so
00000413 2022-11-18 08:57:32 4138159 45caf4c0 [DLLKAFKA] :could not load /hosting/lib/lib/librdkafka.so, (libasan.so.0: cannot open shared object file: No such file or directory)

In this example, libasn.so was not found. Before proceeding further run the Linux ldd command to identify all the dependant libraries and which ones are missing:

ldd <path_to>/librdkafka.so

Output from ldd will contain several lines referencing dependent objects and most likely one or more will be "not found".

libasan.so.0 > not found
libibm.so => /lib64/libm.so.6 (0x0000acb80c000)
libssl.so.10 => not found