Grant Henke has uploaded this change for review. ( http://gerrit.cloudera.org:8080/16031
Change subject: KUDU-1802: Avoid call to master when deserializing scan tokens ...................................................................... KUDU-1802: Avoid call to master when deserializing scan tokens This patch adds a new table metadata field to the scan token which contains all of the metadata required to construct a KuduTable in the clients. This means an RPC call to the master is no longer required when deserializing the scan token. The old table name and table id fields are used as a fallback to maintain backwards compatibility. Adding the table metadata to the scan token is enabled by default given it’s more scalable and performant. However, it can be disabled in rare cases where more resiliancy to column renaming is desired. One example where disabling the table metadata is used is the backup job. Future work, should allow for table metadata to be leveraged in those cases as well. This doesn’t avoid the need for a call to the master in the case of producing data to Kudu, that work is tracked by KUDU-3135. I expect the TableMetadataPB message would be used there as well. Change-Id: I88c1b8392de37dd5e8b7bd8b78a21603ff8b1d1b --- M java/kudu-backup/src/main/scala/org/apache/kudu/backup/KuduBackupRDD.scala M java/kudu-client/src/main/java/org/apache/kudu/client/KuduScanToken.java M java/kudu-client/src/main/java/org/apache/kudu/client/ProtobufHelper.java M java/kudu-client/src/test/java/org/apache/kudu/client/TestScanToken.java M src/kudu/client/client.cc M src/kudu/client/client.h M src/kudu/client/client.proto M src/kudu/client/scan_token-internal.cc M src/kudu/client/scan_token-internal.h M src/kudu/client/scan_token-test.cc 10 files changed, 212 insertions(+), 20 deletions(-) git pull ssh://gerrit.cloudera.org:29418/kudu refs/changes/31/16031/1 -- To view, visit http://gerrit.cloudera.org:8080/16031 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-Project: kudu Gerrit-Branch: master Gerrit-MessageType: newchange Gerrit-Change-Id: I88c1b8392de37dd5e8b7bd8b78a21603ff8b1d1b Gerrit-Change-Number: 16031 Gerrit-PatchSet: 1 Gerrit-Owner: Grant Henke <[email protected]>
