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[Backport 2.x] Fix org.opensearch.rest.action.admin.cluster.RestNodesStatsActionTests.testIndexMetricsRequestWithoutIndicesMetric is flaky #13716

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May 16, 2024
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[Backport 2.x] Fix org.opensearch.rest.action.admin.cluster.RestNodesStatsActionTests.testIndexMetricsRequestWithoutIndicesMetric is flaky #13716

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17 changes: 16 additions & 1 deletion server/src/test/java/org/opensearch/rest/action/admin/cluster/RestNodesStatsActionTests.java
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Original file line number Diff line number Diff line change
Expand Up @@ -130,10 +130,12 @@ public void testUnrecognizedIndexMetricDidYouMean() {
);
}

public void testIndexMetricsRequestWithoutIndicesMetric() throws IOException {
public void testIndexMetricsRequestWithoutIndicesAndCachesMetrics() throws IOException {
final HashMap<String, String> params = new HashMap<>();
final Set<String> metrics = new HashSet<>(RestNodesStatsAction.METRICS.keySet());
metrics.remove("indices");
// caches stats is handled separately
metrics.remove("caches");
params.put("metric", randomSubsetOf(1, metrics).get(0));
final String indexMetric = randomSubsetOf(1, RestNodesStatsAction.FLAGS.keySet()).get(0);
params.put("index_metric", indexMetric);
Expand All @@ -150,6 +152,19 @@ public void testIndexMetricsRequestWithoutIndicesMetric() throws IOException {
);
}

public void testCacheStatsRequestWithInvalidCacheType() throws IOException {
final HashMap<String, String> params = new HashMap<>();
params.put("metric", "caches");
final String cacheType = randomAlphaOfLength(64);
params.put("index_metric", cacheType);
final RestRequest request = new FakeRestRequest.Builder(xContentRegistry()).withPath("/_nodes/stats").withParams(params).build();
final IllegalArgumentException e = expectThrows(
IllegalArgumentException.class,
() -> action.prepareRequest(request, mock(NodeClient.class))
);
assertThat(e, hasToString(containsString("request [/_nodes/stats] contains unrecognized cache type: [" + cacheType + "]")));
}

public void testIndexMetricsRequestOnAllRequest() throws IOException {
final HashMap<String, String> params = new HashMap<>();
params.put("metric", "_all");
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