GitHub user hbdeshmukh opened a pull request:
https://github.com/apache/incubator-quickstep/pull/219
QUICKSTEP-83 Measure memory consumption of a running query
- Methods to get memory footprints of join hash tables (for all of its
implementations)
- Method to get the memory consumed by the active temporary relations
during the query execution.
- Added methods for measuring memory consumed by hash tables used for
aggregation.
- AggregationOperationState can provide total memory used for a single
aggregation node.
- QueryContext can aggregate the memory consumed by all temporary data
structures (e.g. join hash tables, aggregation hash tables).
- QueryManagerBase provides an API to get the total memory footprint of
a query (only implemented for single node version).
- Mutex protection for hash join tables' list and insert destinations' list
in
the QueryContext class.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/hbdeshmukh/incubator-quickstep
query-memory-measurement
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/incubator-quickstep/pull/219.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #219
----
commit 1eac14ec46b76a227c096b88d482c6eda21d6846
Author: Harshad Deshmukh <[email protected]>
Date: 2017-03-21T19:53:38Z
Measure memory consumption of a running query
- Methods to get memory footprints of join hash tables (for all of its
implementations)
- Method to get the memory consumed by the active temporary relations
during the query execution.
- Added methods for measuring memory consumed by hash tables used for
aggregation.
- AggregationOperationState can provide total memory used for a single
aggregation node.
- QueryContext can aggregate the memory consumed by all temporary data
structures (e.g. join hash tables, aggregation hash tables).
- QueryManagerBase provides an API to get the total memory footprint of
a query (only implemented for single node version).
- Mutex protection for hash join tables' list and insert destinations' list
in
the QueryContext class.
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