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HDFS-5543. Fix narrow race condition in TestPathBasedCacheRequests (cmccabe) 

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1544310 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Colin McCabe 2013-11-21 20:15:07 +00:00
parent 0a5b0499f3
commit 9863cb1905
2 changed files with 64 additions and 45 deletions
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3
hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
View File

@ -397,6 +397,9 @@ Trunk (Unreleased)
HDFS-5513. CacheAdmin commands fail when using . as the path. (wang)
HDFS-5543. Fix narrow race condition in TestPathBasedCacheRequests
(cmccabe)
Release 2.3.0 - UNRELEASED
INCOMPATIBLE CHANGES

106
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestCacheDirectives.java
View File

@ -614,6 +614,47 @@ public class TestCacheDirectives {
}, 500, 60000);
}
private static void waitForCachedStats(final DistributedFileSystem dfs,
final long targetFilesAffected, final long targetBytesNeeded,
final long targetBytesCached,
final CacheDirectiveInfo filter, final String infoString)
throws Exception {
LOG.info("Polling listDirectives{" +
((filter == null) ? "ALL" : filter.toString()) +
" for " + targetFilesAffected + " targetFilesAffected, " +
targetBytesNeeded + " targetBytesNeeded, " +
targetBytesCached + " targetBytesCached");
GenericTestUtils.waitFor(new Supplier<Boolean>() {
@Override
public Boolean get() {
RemoteIterator<CacheDirectiveEntry> iter = null;
CacheDirectiveEntry entry = null;
try {
iter = dfs.listCacheDirectives(filter);
entry = iter.next();
} catch (IOException e) {
fail("got IOException while calling " +
"listCacheDirectives: " + e.getMessage());
}
Assert.assertNotNull(entry);
CacheDirectiveStats stats = entry.getStats();
if ((targetFilesAffected == stats.getFilesAffected()) &&
(targetBytesNeeded == stats.getBytesNeeded()) &&
(targetBytesCached == stats.getBytesCached())) {
return true;
} else {
LOG.info(infoString + ": filesAffected: " +
stats.getFilesAffected() + "/" + targetFilesAffected +
", bytesNeeded: " +
stats.getBytesNeeded() + "/" + targetBytesNeeded +
", bytesCached: " +
stats.getBytesCached() + "/" + targetBytesCached);
return false;
}
}
}, 500, 60000);
}
private static void checkNumCachedReplicas(final DistributedFileSystem dfs,
final List<Path> paths, final int expectedBlocks,
final int expectedReplicas)
@ -804,21 +845,12 @@ public class TestCacheDirectives {
waitForCachedBlocks(namenode, 4, 8,
"testWaitForCachedReplicasInDirectory:1");
// Verify that listDirectives gives the stats we want.
RemoteIterator<CacheDirectiveEntry> iter =
dfs.listCacheDirectives(new CacheDirectiveInfo.Builder().
setPath(new Path("/foo")).
build());
CacheDirectiveEntry entry = iter.next();
CacheDirectiveStats stats = entry.getStats();
Assert.assertEquals(Long.valueOf(2),
stats.getFilesAffected());
Assert.assertEquals(Long.valueOf(
2 * numBlocksPerFile * BLOCK_SIZE * 2),
stats.getBytesNeeded());
Assert.assertEquals(Long.valueOf(
2 * numBlocksPerFile * BLOCK_SIZE * 2),
stats.getBytesCached());
waitForCachedStats(dfs, 2,
8 * BLOCK_SIZE, 8 * BLOCK_SIZE,
new CacheDirectiveInfo.Builder().
setPath(new Path("/foo")).
build(),
"testWaitForCachedReplicasInDirectory:2");
long id2 = dfs.addCacheDirective(
new CacheDirectiveInfo.Builder().
setPath(new Path("/foo/bar")).
@ -827,44 +859,28 @@ public class TestCacheDirectives {
build());
// wait for an additional 2 cached replicas to come up
waitForCachedBlocks(namenode, 4, 10,
"testWaitForCachedReplicasInDirectory:2");
"testWaitForCachedReplicasInDirectory:3");
// the directory directive's stats are unchanged
iter = dfs.listCacheDirectives(
waitForCachedStats(dfs, 2,
8 * BLOCK_SIZE, 8 * BLOCK_SIZE,
new CacheDirectiveInfo.Builder().
setPath(new Path("/foo")).
build());
entry = iter.next();
stats = entry.getStats();
Assert.assertEquals(Long.valueOf(2),
stats.getFilesAffected());
Assert.assertEquals(Long.valueOf(
2 * numBlocksPerFile * BLOCK_SIZE * 2),
stats.getBytesNeeded());
Assert.assertEquals(Long.valueOf(
2 * numBlocksPerFile * BLOCK_SIZE * 2),
stats.getBytesCached());
setPath(new Path("/foo")).
build(),
"testWaitForCachedReplicasInDirectory:4");
// verify /foo/bar's stats
iter = dfs.listCacheDirectives(
waitForCachedStats(dfs, 1,
4 * numBlocksPerFile * BLOCK_SIZE,
// only 3 because the file only has 3 replicas, not 4 as requested.
3 * numBlocksPerFile * BLOCK_SIZE,
new CacheDirectiveInfo.Builder().
setPath(new Path("/foo/bar")).
build());
entry = iter.next();
stats = entry.getStats();
Assert.assertEquals(Long.valueOf(1),
stats.getFilesAffected());
Assert.assertEquals(Long.valueOf(
4 * numBlocksPerFile * BLOCK_SIZE),
stats.getBytesNeeded());
// only 3 because the file only has 3 replicas, not 4 as requested.
Assert.assertEquals(Long.valueOf(
3 * numBlocksPerFile * BLOCK_SIZE),
stats.getBytesCached());
setPath(new Path("/foo/bar")).
build(),
"testWaitForCachedReplicasInDirectory:5");
// remove and watch numCached go to 0
dfs.removeCacheDirective(id);
dfs.removeCacheDirective(id2);
waitForCachedBlocks(namenode, 0, 0,
"testWaitForCachedReplicasInDirectory:3");
"testWaitForCachedReplicasInDirectory:6");
} finally {
cluster.shutdown();
}