Details
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Task
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Status: Resolved
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Major
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Resolution: Done
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None
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None
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Docs Required, Release Notes Required
Description
According to an algorithm from https://issues.apache.org/jira/browse/IGNITE-16020, we need to support partition assignments updates when:
- baseline changed
- number of partition replicas changed
This update needs metastore multi-invoke feature and can be described as:
onBaselineEvent:
for table in tableCfg.tables():
for partition in table.partitions:
<inline metastoreInvoke>
onReplicaNumberChange:
with table as event.table:
for partitoin in table.partitions:
<inline metastoreInvoke>
metastoreInvoke: // atomic metastore call through multi-invoke api
if empty(partition.change.trigger.revision) || partition.change.trigger.revision < event.revision:
if empty(partition.assignments.pending) && partition.assignments.stable != calcPartAssighments():
partition.assignments.pending = calcPartAssignments()
partition.change.trigger.revision = event.revision
else:
if partition.assignments.pending != calcPartAssignments
partition.assignments.planned = calcPartAssignments()
partition.change.trigger.revision = event.revision
else
remove(partition.assignments.planned)
else:
skip
(Phase 1)
Attachments
Issue Links
- is blocked by
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IGNITE-14269 Design conditional multi update functionality for meta storage client
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- Resolved
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IGNITE-16654 Add an ability to compare entry values in meta storage conditional updates
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- Resolved
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