Shalin Shekhar Mangar created SOLR-11038:
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Summary: Fix AutoScalingSnitch's use of usableSpace metrics to
account for solr.data.home and dataDir in solrconfig.xml
Key: SOLR-11038
URL: https://issues.apache.org/jira/browse/SOLR-11038
Project: Solr
Issue Type: Sub-task
Security Level: Public (Default Security Level. Issues are Public)
Components: AutoScaling, metrics
Affects Versions: 7.0
Reporter: Shalin Shekhar Mangar
Fix For: 7.1
SOLR-6671 and related issues SOLR-11036 and SOLR-11037 made me realize that
computing free disk available in order to place new replicas on nodes is not as
trivial as currently implemented.
Today we just use the {{metrics/solr.node/CONTAINER.fs.usableSpace}} metric
which returns the usableSpace of the coreRootDirectory. But it has the
following problems:
# The solrconfig.xml of the collection's configset may specify a different path
than coreRootDirectory
# If solr.data.home is specified as a system property on the node then we must
use that directory's usableSpace
# For both of the above, we must also use the coreRootDirectory's usableSpace
for correctness otherwise the node will flat out refuse to create a core
because it cannot create a core.properties on disk.
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