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https://issues.apache.org/jira/browse/HBASE-25185?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael Stack updated HBASE-25185:
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Description:
Let's try to find a way to move MTA to hbase-server. Putting it in
hbase-balancer is a bit weird (Why is the MetaTableAccessor in the balancer
module?).
MetaTableAccessor (MTA) is in hbase-balancer because the favored nodes (FN)
feature wants to write to meta.
The FN feature (HBASE-7932 which arrived in hbase-0.96.0) I believe is unused.
The idea of maintaining locality across a crash is a good one but having to
enable a different balancer to default to enable FN operation has made it so
the feature has been let rot. HBASE-21014 makes an appeal for integrating FN
into the default stochastic balancer. HBASE-15531 is an old effort that
actually tried to integrate FN into stochastic balancer but stalled out.
was:Let's try to find a way to move MTA to hbase-server. Putting it in
hbase-balancer is a bit weird.
> Remove the usage of MetaTableAccessor in hbase-balancer
> -------------------------------------------------------
>
> Key: HBASE-25185
> URL: https://issues.apache.org/jira/browse/HBASE-25185
> Project: HBase
> Issue Type: Sub-task
> Components: Balancer, meta
> Reporter: Duo Zhang
> Priority: Major
>
> Let's try to find a way to move MTA to hbase-server. Putting it in
> hbase-balancer is a bit weird (Why is the MetaTableAccessor in the balancer
> module?).
> MetaTableAccessor (MTA) is in hbase-balancer because the favored nodes (FN)
> feature wants to write to meta.
> The FN feature (HBASE-7932 which arrived in hbase-0.96.0) I believe is
> unused. The idea of maintaining locality across a crash is a good one but
> having to enable a different balancer to default to enable FN operation has
> made it so the feature has been let rot. HBASE-21014 makes an appeal for
> integrating FN into the default stochastic balancer. HBASE-15531 is an old
> effort that actually tried to integrate FN into stochastic balancer but
> stalled out.
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