haosdent created MESOS-5037:
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Summary: foreachkey behaviour is not expected in multimap
Key: MESOS-5037
URL: https://issues.apache.org/jira/browse/MESOS-5037
Project: Mesos
Issue Type: Bug
Reporter: haosdent
Currently the {{foreachkey}} implementation is
{code}
#define foreachkey(VAR, COL) \
foreachpair (VAR, __foreach__::ignore, COL)
{code}
This works in most structures. But in multimap, one key may map to multi
values. This means there are multi pairs which have same key. So when call
{{foreachkey}}, the {{key}} would duplicated when iteration. My idea to solve
this is we prefer call {{foreach}} on {{(COL).keys()}} if {{keys()}} method
exists in {{COL}}.
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