mlbiscoc commented on code in PR #2924:
URL: https://github.com/apache/solr/pull/2924#discussion_r1896910582
##########
solr/core/src/java/org/apache/solr/core/SolrCore.java:
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@@ -1354,16 +1354,29 @@ public void initializeMetrics(SolrMetricsContext
parentContext, String scope) {
Category.CORE.toString());
}
- // TODO SOLR-8282 move to PATH
// initialize disk total / free metrics
- Path dataDirPath = Paths.get(dataDir);
- File dataDirFile = dataDirPath.toFile();
- parentContext.gauge(
- () -> dataDirFile.getTotalSpace(), true, "totalSpace",
Category.CORE.toString(), "fs");
+ Path dataDirFile = Paths.get(dataDir);
+ long totalSpace;
+ long useableSpace;
+
+ try {
+ totalSpace = Files.getFileStore(dataDirFile).getTotalSpace();
+ useableSpace = Files.getFileStore(dataDirFile).getUsableSpace();
+ } catch (Exception e) {
+ // TODO Metrics used to default to 0 with java.io.File even if directory
didn't exist
+ // Should throw an exception and initialize data directory before metrics
+ totalSpace = 0L;
+ useableSpace = 0L;
+ }
Review Comment:
This here was questionable. Upon a Solr core being initialized, metrics was
trying to calculate and initialize a gauge for the `data/` directories before
the directory was ever created. This always failed with `File` but it defaults
to 0. `Path` on the other hand throws an `Exception`. This didn't seem right
but also moving where the `initializeMetrics` is called in a bunch of different
places had tests failing and I wasn't sure why so I kept it as TODO.
But also if this is initializing metrics for a `SolrCore` registry upon
creation, shouldn't it always be 0 as the data directory was most likely just
created?
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