Distributor accept multiple HA Tracker pairs in the same request (find first) #6279
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…A pairs (cluster, replica) in the same requets/batch. This can be enabled with a new flag, accept_mixed_ha_samples, an will take effect only if accept_ha_samples is set to true. Fixed test by reducing the number of ingesters to 2 and replication factor to 2. Added config reference. Do not remove replica label if cluster label is not present. Added more HA mixed replicas tests with no cluster and replica labels and with cluster label only. Added e2e test for mixed HA samples in the same request. Refactored distributor mixed HA samples logic. Signed-off-by: eduardscaueru <edi_scaueru@yahoo.com>
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What this PR does:
Added new implementation that makes the distributor accept multiple HA pairs (cluster, replica) in the same requets/batch. This can be enabled with a new flag, accept_mixed_ha_samples, an will take effect only if accept_ha_samples is set to true.
This implementation will identify for every unique HA pair of (cluster, replica) which are the elected replicas, before the timeseries from the batch are processed. When they are processed in the prepareSeriesKeys method, for every timeseries it checks if the pair (cluster, replica) is in the valid pairs map and if not, it is discarded and moves on with the other timeseries from the batch.
It also ensures that when the cluster label is missing the replica label is not removed.
Which issue(s) this PR fixes:
Fixes #6256
Checklist
CHANGELOG.mdupdated - the order of entries should be[CHANGE],[FEATURE],[ENHANCEMENT],[BUGFIX]