Louis, we need to see the code to help you - could you please share it, both Java and C++ parts? Ideally a reproducer that we can run.
On Tue, Jul 30, 2024 at 11:59 AM Igor Sapego <isap...@apache.org> wrote: > What I see from the object is that it's fully raw, meaning, all the fields > written without names. Is that correct? > > In this case, there is no schema on C++ side, because there are no named > fields and schema is not needed. > Java client writes schemaInitialId() in this case, which is > FNV1_OFFSET_BASIS(0x811C9DC5). > > Looks like a bug in Java client to me. Pavel, what do you think? > > Best Regards, > Igor > > > On Tue, Jul 30, 2024 at 10:03 AM Louis C <l...@outlook.fr> wrote: > >> Sorry to up this subject, but I have not been able to find a >> solution/reason for this problem. >> Does anyone have an idea ? >> >> Thanks, >> >> Louis C. >> ------------------------------ >> *De :* Louis C <l...@outlook.fr> >> *Envoyé :* lundi 22 juillet 2024 17:06 >> *À :* user@ignite.apache.org <user@ignite.apache.org> >> *Objet :* RE: Ignite cache with custom key : key not found >> >> Hello, >> >> Thanks for your answers. >> >> As for the "compactFooter" I already set it to "false" in the xml config >> of the server. For the client, it is the C++ thin client and in the >> object"IgniteClientConfiguration" I can not do it, it seems. I believe >> there is no need to set this parameter for the C++ thin client. >> >> It will be quite hard to extract a reproducible example, but I might do >> it if necessary. >> In the meantime I managed to extract the binary representartion of the 2 >> differents keys (in hexadecimal) : >> Key from C++ thin client : >> 67 01 05 00 91 D3 05 6C 87 E6 CF 1E 26 00 00 00 00 00 00 00 18 00 00 00 >> 05 00 00 00 0C 05 00 00 00 32 32 32 32 32 >> Key from Java : >> 67 01 05 00 91 D3 05 6C 87 E6 CF 1E 26 00 00 00 C5 9D 1C 81 18 00 00 00 >> 05 00 00 00 0C 05 00 00 00 32 32 32 32 32 >> >> As we can see, the difference is the 4 bytes in position 17 to 20, >> corresponding, if we follow >> https://cwiki.apache.org/confluence/display/IGNITE/Binary%20object%20format >> to >> the "Schema Id" which is a "has of the object fields". >> In case of C++ thin client it is "00 00 00 00", and "C5 9D 1C 81". >> The bytes in position 3 to 4 are " 05 00" which seems to indicate user >> type + raw data, but indeed there is not the flag "compact footer" (0x20). >> So it seems to be OK. >> >> I do not know if I said it but I add keys with a CacheEntryProcessor on >> the java side of things. >> Anyone has an idea ? >> >> Best regards, >> Louis C. >> >> ------------------------------ >> *De :* Николай Ижиков <nizhikov....@gmail.com> de la part de Nikolay >> Izhikov <nizhi...@apache.org> >> *Envoyé :* lundi 22 juillet 2024 10:33 >> *À :* user@ignite.apache.org <user@ignite.apache.org> >> *Objet :* Re: Ignite cache with custom key : key not found >> >> Hello. >> >> It common issue with the thin client. >> Please, set same value of BinaryConfiguration#compactFooter explicitly to >> false both on the server side and client side. >> >> On 22 Jul 2024, at 10:32, Pavel Tupitsyn <ptupit...@apache.org> wrote: >> >> Hello, could you please attach a reproducer? >> >> This might have to do with type names / ids mismatch, but hard to tell >> without the code. >> >> On Fri, Jul 19, 2024 at 7:39 PM Louis C <l...@outlook.fr> wrote: >> >> Hello, >> >> I have a strange problem for which I can't find the reason. >> >> I made a cache (key/value cache) with a custom key type that is called >> "IgniteBinaryData". >> >> I have a C++ thin client that calls the server and execute a Java >> ComputeTaskAdapter<CustomType1,CustomType2> that I made (let's call it >> "Task1"). >> This Task1 writes data in the cache with the custom key type >> "IgniteBinaryData". >> >> But the issue is that when I request the same cache from the C++ thin >> client, the key is not found. >> >> What is strange is that I can then add the key with a "Put" from the C++, >> and when I look at the deserialized keys in the java code, there does not >> seem to be any difference between the 2 "different" keys, which are both >> present in the cache. >> >> What I saw is that when I do a "Get" from the C++, the key is not >> deserialized (Ignite looks only at the serialized data of the keys). >> >> So I think there might be a difference in the serialization of the key >> between the Java code and the C++, but not visible when deserialized. >> >> But looking at all the entries in the cache with an iterator, I found no >> differences. I tried using the".withKeepBinary();" method to access the >> keys without deserialization, but I can't find a way to get the "bytes[]" >> corresponding to the key from the BinaryObject. >> >> So, my question would be : how to get the "bytes[]" corresponding to a >> custom key ? >> And also, is there a known issue that could arise when doing this ? I >> carefully followed >> https://ignite.apache.org/docs/latest/cpp-specific/cpp-platform-interoperability >> and >> I have no problem of deserialization... >> >> Best regards, >> >> Louis C. >> >> >>
