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https://issues.apache.org/jira/browse/MESOS-5037?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16884044#comment-16884044
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Benjamin Mahler edited comment on MESOS-5037 at 7/12/19 5:59 PM:
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[~bmahler] Sure, it is
https://github.com/apache/mesos/blob/9932550e9632e7fbb9a45b217793c7f508f57001/src/master/master.cpp#L7707-L7708
{code}
void Master::__reregisterSlave(
...
foreachkey (FrameworkID frameworkId,
slaves.unreachableTasks.at(slaveInfo.id())) {
...
foreach (TaskID taskId,
slaves.unreachableTasks.at(slaveInfo.id()).get(frameworkId)) {
{code}
Our case is when network flapping, 3~4 agents reregister, then master would CPU
full and could not process any requests during that period.
was (Author: [email protected]):
[~bmahler] Sure, it is
https://github.com/apache/mesos/blob/master/src/master/master.cpp#L7707-L7708
{code}
void Master::__reregisterSlave(
...
foreachkey (FrameworkID frameworkId,
slaves.unreachableTasks.at(slaveInfo.id())) {
...
foreach (TaskID taskId,
slaves.unreachableTasks.at(slaveInfo.id()).get(frameworkId)) {
{code}
Our case is when network flapping, 3~4 agents reregister, then master would CPU
full and could not process any requests during that period.
> foreachkey behaviour is not expected in multimap
> ------------------------------------------------
>
> Key: MESOS-5037
> URL: https://issues.apache.org/jira/browse/MESOS-5037
> Project: Mesos
> Issue Type: Bug
> Components: stout
> Reporter: haosdent
> Priority: Major
> Labels: foundations, stout
>
> 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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