+1 On Fri, Apr 8, 2016 at 2:41 PM, Grant Henke <ghe...@cloudera.com> wrote:
> I would like to re-initiate the voting process for the "KIP-4 Metadata > Schema changes". This is not a vote for all of KIP-4, but specifically for > the metadata changes. I have included the exact changes below for clarity: > > > > Metadata Request (version 1) > > > > > > > > MetadataRequest => [topics] > > > > Stays the same as version 0 however behavior changes. > > In version 0 there was no way to request no topics, and and empty list > > signified all topics. > > In version 1 a null topics list (size -1 on the wire) will indicate that > a > > user wants *ALL* topic metadata. Compared to an empty list (size 0) which > > indicates metadata for *NO* topics should be returned. > > Metadata Response (version 1) > > > > > > > > MetadataResponse => [brokers] controllerId [topic_metadata] > > brokers => node_id host port rack > > node_id => INT32 > > host => STRING > > port => INT32 > > rack => NULLABLE_STRING > > controllerId => INT32 > > topic_metadata => topic_error_code topic is_internal > [partition_metadata] > > topic_error_code => INT16 > > topic => STRING > > is_internal => BOOLEAN > > partition_metadata => partition_error_code partition_id leader > [replicas] [isr] > > partition_error_code => INT16 > > partition_id => INT32 > > leader => INT32 > > replicas => INT32 > > isr => INT32 > > > > Adds rack, controller_id, and is_internal to the version 0 response. > > > > The KIP is available here for reference (linked to the Metadata schema > section): > * > https://cwiki.apache.org/confluence/display/KAFKA/KIP-4+-+Command+line+and+centralized+administrative+operations#KIP-4-Commandlineandcentralizedadministrativeoperations-MetadataSchema > < > https://cwiki.apache.org/confluence/display/KAFKA/KIP-4+-+Command+line+and+centralized+administrative+operations#KIP-4-Commandlineandcentralizedadministrativeoperations-MetadataSchema > >* > > A pull request is available implementing the proposed changes here: > https://github.com/apache/kafka/pull/1095 > > Here are some links to past discussions on the mailing list: > http://search-hadoop.com/m/uyzND1pd4T52H1m0u1&subj=Re+KIP+4+Wiki+Update > > http://search-hadoop.com/m/uyzND1J2IXeSNXAT&subj=Metadata+and+ACLs+wire+protocol+review+KIP+4+ > > Here is the previous vote discussion (please take a look and discuss > there): > > http://search-hadoop.com/m/uyzND1xlaiU10QlYX&subj=+VOTE+KIP+4+Metadata+Schema > > Thank you, > Grant > -- > Grant Henke > Software Engineer | Cloudera > gr...@cloudera.com | twitter.com/gchenke | linkedin.com/in/granthenke >
