[ https://issues.apache.org/jira/browse/BEAM-1281?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Kenneth Knowles closed BEAM-1281. --------------------------------- Resolution: Won't Fix Fix Version/s: Not applicable > GlobalWindow needs non-empty encoding in StateNamespaces > -------------------------------------------------------- > > Key: BEAM-1281 > URL: https://issues.apache.org/jira/browse/BEAM-1281 > Project: Beam > Issue Type: Bug > Components: sdk-java-core > Reporter: Kenneth Knowles > Assignee: Kenneth Knowles > Priority: Minor > Fix For: Not applicable > > > Because the GlobalWindow is encoded to zero bytes, a StateNamespace built > from the window has a stringKey "//" while the global namespace's stringKey > is "/". As paths, these are identical, though we don't currently treat them > as paths, quite. It isn't clear whether this is desirable. Maybe it is > harmless but it complicates parsing and interpretation. > For a system that actually builds hierarchical paths out of, say, some > prefix, the StateNamespace, and a subsequent ID, the canonicalized path is > the same so it is not possible to deserialize to the original. > There are other gotchas associated with zero-length encodings, such as APIs > that return zero bytes when there is no more data ready, versus returning > zero bytes because the data is representable in zero bytes, given the context > of knowing what type of data is expected. -- This message was sent by Atlassian JIRA (v6.3.4#6332)