Huaisi Xu has posted comments on this change. Change subject: IMPALA-1702: Enforce unique table ID ......................................................................
Patch Set 2: > If we use a long (64-bits) do we even need to track which IDs are > in use? > > I calculate that if we allocate 1 million IDs a second it would > take almost 300,000 years to run out of 64-bit integers. In python: > > >>> (2 ** 63) / 1000000 / 60 / 60 / 24 / 365 > 292471L do you think same table with different ID is ok? that is possible when just increasing table ID -- To view, visit http://gerrit.cloudera.org:8080/4349 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-MessageType: comment Gerrit-Change-Id: Ifad648b72684ae495ec387590ab1bc58ce5b39e2 Gerrit-PatchSet: 2 Gerrit-Project: Impala-ASF Gerrit-Branch: master Gerrit-Owner: Huaisi Xu <[email protected]> Gerrit-Reviewer: Dimitris Tsirogiannis <[email protected]> Gerrit-Reviewer: Huaisi Xu <[email protected]> Gerrit-Reviewer: Tim Armstrong <[email protected]> Gerrit-HasComments: No
