So there is no formal compatibility document between 2.6 and 3.x ? Then how to upgrade? also seem 2.7 is not a stable version
On Tuesday, October 8, 2019 at 1:33:46 AM UTC+8 [email protected] wrote: > Any mixing of 2.x and 3.x is not supported; you might get lucky and have > it work, but I wouldn't recommend doing that because no one has attempted > to make that work safely. As long as all your code is at 3.0 or higher, you > can freely mix 3.x versions as long as you follow the rule that the runtime > library version is at least as high as the protoc version of the newest > generated code (i.e. no generated code newer than the runtime library). > > On Mon, Oct 7, 2019 at 3:36 AM André Pinto <[email protected]> wrote: > >> I have the same question. >> >> protobuf-java 3.7.1 seems to be compatible with Protobuf generated with >> protoc 2.5.0. >> >> Is there any official statement about the compatibility of the >> protobuf-java library against different protobuf versions? >> >> On Tuesday, June 5, 2018 at 1:44:02 AM UTC+1, madhav goyal wrote: >>> >>> Hey Feng, Can you please tell what's the incompatibility between >>> protoc_linux.2.5 and protobuf-java_3.x? I upgraded protobuf-java to 3.5 and >>> tried to use it with protoc_linux.2.5 and I was able to compile, read/write >>> with no issues. >>> >>> $protoc_linux --version >>> libprotoc 2.5.0 >>> >>> <dependency> >>> <groupId>com.google.protobuf</groupId> >>> <artifactId>protobuf-java</artifactId> >>> <version>3.5.0</version> >>> </dependency> >>> >>> On Thursday, 20 April 2017 18:10:25 UTC-7, Feng Xiao wrote: >>>> >>>> >>>> >>>> On Thu, Apr 20, 2017 at 6:01 PM, Scott Sue <[email protected]> >>>> wrote: >>>> >>>>> Hi Feng, >>>>> >>>>> Apologies, what I was meaning was that with the introduction of >>>>> protobuf 3.2.0 now, is 3.2.0 binary compatible with protobuf 2.5.0? Or >>>>> does you original message reply still hold true? >>>>> >>>> No, 3.2.0 runtime is not binary compatible with 2.5.0 generated code. >>>> It is only binary compatible with older 3.x version generated code, such >>>> as >>>> 3.0, or 3.1. >>>> >>>> >>>>> >>>>> >>>>> Regards, >>>>> Scott >>>>> >>>>> SCOTT SUE >>>>> CHIEF TECHNOLOGY OFFICER >>>>> >>>>> Support Line : +44(0) 2031 371 603 >>>>> Mobile : +852 9611 3969 >>>>> >>>>> 9/F, 33 Lockhart Road, Wanchai, Hong Kong >>>>> www.celer-tech.com >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> On 21 Apr 2017, at 2:08 AM, Feng Xiao <[email protected]> wrote: >>>>> >>>>> >>>>> >>>>> On Thu, Apr 20, 2017 at 3:55 AM, Scott Sue <[email protected]> >>>>> wrote: >>>>> >>>>>> Hi Feng, >>>>>> >>>>>> Is this still the case considering that 3.2.0 is out that allows the >>>>>> version number to be used by protoc? >>>>>> >>>>> Not sure what you are asking, but 3.0.0 generated code should work >>>>> with 3.2.0 runtime and 3.2.0 protoc will work with any old version >>>>> plugins. >>>>> >>>>> >>>>>> >>>>>> General >>>>>> * Added protoc version number to protoc plugin protocol. It can be >>>>>> used by >>>>>> protoc plugin to detect which version of protoc is used with the >>>>>> plugin and >>>>>> mitigate known problems in certain version of protoc. >>>>>> Regards, >>>>>> Scott >>>>>> >>>>>> >>>>>> On Saturday, August 13, 2016 at 8:00:23 AM UTC+8, Feng Xiao wrote: >>>>>>> >>>>>>> On Thu, Aug 11, 2016 at 12:21 PM, Jeff Olson <[email protected]> >>>>>>> wrote: >>>>>>> >>>>>>>> I've read through the release documents >>>>>>>> <https://github.com/google/protobuf/releases/tag/v3.0.0> for >>>>>>>> Protocol Buffers v3.0.0 but I can't find any statements regrading >>>>>>>> binary >>>>>>>> compatibility with version 2.6.1 (or earlier). There are a couple of >>>>>>>> things >>>>>>>> I'd like to know: >>>>>>>> >>>>>>>> >>>>>>>> 1. If I dump a 3.0.0 version of the >>>>>>>> com.google.protobuf/protobuf-java.jar in a project the depends on >>>>>>>> java >>>>>>>> classes generated by protoc v2.6.1 (or v2.5.0) will everything >>>>>>>> still work? >>>>>>>> That is, is the java runtime backwards compatible? >>>>>>>> >>>>>>>> Unfortunately no. The 3.0.0 version protobuf-java.jar will not work >>>>>>> with java classes generated by protoc v2.6.1 (or v2.5.0). For those who >>>>>>> can >>>>>>> not upgrade to 3.0 directly, we are considering releasing a 2.7 version >>>>>>> which provides the following compatibility guarantees: >>>>>>> 1. 2.7 protobuf-java.jar will be compatible with java classes >>>>>>> generated by protoc 2.6.1 and protoc 2.5.0. >>>>>>> 2. 3.0 protobuf-java.jar will be compatible with java classes >>>>>>> generated by protoc 2.7 >>>>>>> >>>>>>> I.e., it allows you to upgrade to 3.0 in two steps: upgrade to 2.7, >>>>>>> and after all your dependencies are upgraded to either 2.7 or 3.0, you >>>>>>> can >>>>>>> upgrade to 3.0 as well. It's not an ideal solution, but we hope it can >>>>>>> help >>>>>>> ease the migration pain for some users. I'm testing this 2.7 version in >>>>>>> a >>>>>>> github branch right now: >>>>>>> https://github.com/google/protobuf/tree/2.7.0. If you are >>>>>>> interested, feel free to test it and any feedback is welcome. >>>>>>> >>>>>>> >>>>>>>> >>>>>>>> 1. Is the binary wire format the same for purely proto2 >>>>>>>> messages? If I serialize messages generated from proto2 sources >>>>>>>> using the >>>>>>>> 3.0.0 java runtime will clients using protobuf v2.6.1 be able to >>>>>>>> decode the >>>>>>>> messages correctly? >>>>>>>> >>>>>>>> Yes. The wire format stays the same as long as you are using the >>>>>>> proto2 syntax version. >>>>>>> >>>>>>> Thanks, >>>>>>>> Jeff >>>>>>>> >>>>>>>> -- >>>>>>>> You received this message because you are subscribed to the Google >>>>>>>> Groups "Protocol Buffers" group. >>>>>>>> To unsubscribe from this group and stop receiving emails from it, >>>>>>>> send an email to [email protected]. >>>>>>>> To post to this group, send email to [email protected]. >>>>>>>> Visit this group at https://groups.google.com/group/protobuf. >>>>>>>> For more options, visit https://groups.google.com/d/optout. >>>>>>>> >>>>>>> >>>>>>> >>>>>> *This message, including any attachments, may include private, >>>>>> privileged and confidential information and is intended only for the >>>>>> personal and confidential use of the intended recipient(s). If the >>>>>> reader >>>>>> of this message is not an intended recipient, you are hereby notified >>>>>> that >>>>>> any review, use, dissemination, distribution, printing or copying of >>>>>> this >>>>>> message or its contents is strictly prohibited and may be unlawful. If >>>>>> you >>>>>> are not an intended recipient or have received this communication in >>>>>> error, >>>>>> please immediately notify the sender by telephone and/or a reply email >>>>>> and >>>>>> permanently delete the original message, including any attachments, >>>>>> without >>>>>> making a copy.* >>>>>> >>>>>> -- >>>>>> You received this message because you are subscribed to the Google >>>>>> Groups "Protocol Buffers" group. >>>>>> To unsubscribe from this group and stop receiving emails from it, >>>>>> send an email to [email protected]. >>>>>> To post to this group, send email to [email protected]. >>>>>> Visit this group at https://groups.google.com/group/protobuf. >>>>>> For more options, visit https://groups.google.com/d/optout. >>>>>> >>>>> >>>>> >>>>> >>>>> *This message, including any attachments, may include private, >>>>> privileged and confidential information and is intended only for the >>>>> personal and confidential use of the intended recipient(s). If the reader >>>>> of this message is not an intended recipient, you are hereby notified >>>>> that >>>>> any review, use, dissemination, distribution, printing or copying of this >>>>> message or its contents is strictly prohibited and may be unlawful. If >>>>> you >>>>> are not an intended recipient or have received this communication in >>>>> error, >>>>> please immediately notify the sender by telephone and/or a reply email >>>>> and >>>>> permanently delete the original message, including any attachments, >>>>> without >>>>> making a copy.* >>>>> >>>> >>>> -- >> You received this message because you are subscribed to the Google Groups >> "Protocol Buffers" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> > To view this discussion on the web visit >> https://groups.google.com/d/msgid/protobuf/d7971524-638e-4a45-967a-fd9a1b233615%40googlegroups.com >> >> <https://groups.google.com/d/msgid/protobuf/d7971524-638e-4a45-967a-fd9a1b233615%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> > -- You received this message because you are subscribed to the Google Groups "Protocol Buffers" group. 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