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Posted to issues@hbase.apache.org by "Ted Yu (Reopened) (JIRA)" <ji...@apache.org> on 2011/11/15 19:29:52 UTC
[jira] [Reopened] (HBASE-4768) Per-(table, columnFamily) metrics
with configurable table name inclusion
[ https://issues.apache.org/jira/browse/HBASE-4768?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Ted Yu reopened HBASE-4768:
---------------------------
TestHFileBlock fails on Jenkins.
> Per-(table, columnFamily) metrics with configurable table name inclusion
> ------------------------------------------------------------------------
>
> Key: HBASE-4768
> URL: https://issues.apache.org/jira/browse/HBASE-4768
> Project: HBase
> Issue Type: New Feature
> Reporter: Mikhail Bautin
> Assignee: Mikhail Bautin
> Fix For: 0.94.0
>
> Attachments: D363.1.patch, D363.2.patch, D363.3.patch, D363.4.patch, D363.5.patch
>
>
> As we kept adding more granular block read and block cache usage statistics, a combinatorial explosion of various cases to monitor started to happen, especially when we wanted both per-table/column family/block type statistics and aggregate statistics on various subsets of these dimensions. Here, we un-clutters HFile readers, LruBlockCache, StoreFile, etc. by creating a centralized class that knows how to update all kinds of per-table/CF/block type counters.
> Table name and column family configuration have been pushed to a base class, SchemaConfigured. This is convenient as many of existing classes that have these properties (HFile readers/writers, HFile blocks, etc.) did not have a base class. Whether to collect per-(table, columnFamily) or per-columnFamily only metrics can be configured with the hbase.metrics.showTableName configuration key. We don't expect this configuration to change at runtime, so we cache the setting statically and log a warning when an attempt is made to flip it once already set. This way we don't have to pass configuration to a lot more places, e.g. everywhere an HFile reader is instantiated.
> Thanks to Liyin for his initial version of per-table metrics patch and a lot of valuable feedback.
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