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Relax elapsed time stats assertion (#55710) 

`SearchableSnapshotDirectoryStatsTests#testCachedBytesReadsAndWrites` asserts
that each write takes one clock tick, but we now permit concurrent reads and
writes so each write might take longer. This commit relaxes the assertion to
match.

Closes #55707
This commit is contained in:
David Turner 2020-04-24 10:20:31 +01:00
parent c89917c799
commit de30550aea
1 changed files with 8 additions and 1 deletions
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9
x-pack/plugin/searchable-snapshots/src/test/java/org/elasticsearch/index/store/SearchableSnapshotDirectoryStatsTests.java
View File

@ -36,6 +36,7 @@ import static org.elasticsearch.index.store.cache.TestUtils.createCacheService;
import static org.elasticsearch.index.store.cache.TestUtils.singleBlobContainer;
import static org.elasticsearch.xpack.searchablesnapshots.SearchableSnapshots.SNAPSHOT_CACHE_ENABLED_SETTING;
import static org.elasticsearch.xpack.searchablesnapshots.SearchableSnapshots.SNAPSHOT_UNCACHED_CHUNK_SIZE_SETTING;
import static org.hamcrest.Matchers.allOf;
import static org.hamcrest.Matchers.equalTo;
import static org.hamcrest.Matchers.greaterThan;
import static org.hamcrest.Matchers.greaterThanOrEqualTo;
@ -117,7 +118,13 @@ public class SearchableSnapshotDirectoryStatsTests extends ESIndexInputTestCase
);
assertThat(
inputStats.getCachedBytesWritten().totalNanoseconds(),
equalTo(cachedBytesWriteCount * FAKE_CLOCK_ADVANCE_NANOS)
allOf(
// each read takes at least FAKE_CLOCK_ADVANCE_NANOS time
greaterThanOrEqualTo(FAKE_CLOCK_ADVANCE_NANOS * cachedBytesWriteCount),
// worst case: we start all reads before finishing any of them
lessThanOrEqualTo(FAKE_CLOCK_ADVANCE_NANOS * cachedBytesWriteCount * cachedBytesWriteCount)
)
);
assertThat(inputStats.getCachedBytesRead(), notNullValue());