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HDFS-11717. Add unit test for HDFS-11709 StandbyCheckpointer should handle non-existing legacyOivImageDir gracefully. Contributed by Erik Krogen.

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(cherry picked from commit d9014bda93760f223789d2ec9f5e35f40de157d4)
(cherry picked from commit 9d6b873d3c249aa76420ab03ceefc6180295915f)
This commit is contained in:
Erik Krogen 2017-05-02 17:56:19 -07:00 committed by Konstantin V Shvachko
parent 60e74edd05
commit a00cef6079
2 changed files with 21 additions and 1 deletions
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2
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/ha/StandbyCheckpointer.java
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@ -193,7 +193,7 @@ private void doCheckpoint() throws InterruptedException, IOException {
try {
img.saveLegacyOIVImage(namesystem, outputDir, canceler);
} catch (IOException ioe) {
LOG.error("Exception encountered while saving legacy OIV image; "
LOG.warn("Exception encountered while saving legacy OIV image; "
+ "continuing with other checkpointing steps", ioe);
}
}

20
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/ha/TestStandbyCheckpoints.java
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@ -27,6 +27,7 @@
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.FSDataOutputStream;
import org.apache.hadoop.fs.FileUtil;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hdfs.DFSConfigKeys;
import org.apache.hadoop.hdfs.DFSTestUtil;
@ -484,6 +485,25 @@ public void run() {
t.join();
}
/**
* Test that checkpointing is still successful even if an issue
* was encountered while writing the legacy OIV image.
*/
@Test(timeout=300000)
public void testCheckpointSucceedsWithLegacyOIVException() throws Exception {
// Delete the OIV image dir to cause an IOException while saving
FileUtil.fullyDelete(tmpOivImgDir);
doEdits(0, 10);
HATestUtil.waitForStandbyToCatchUp(nn0, nn1);
// Once the standby catches up, it should notice that it needs to
// do a checkpoint and save one to its local directories.
HATestUtil.waitForCheckpoint(cluster, 1, ImmutableList.of(12));
// It should also upload it back to the active.
HATestUtil.waitForCheckpoint(cluster, 0, ImmutableList.of(12));
}
private void doEdits(int start, int stop) throws IOException {
for (int i = start; i < stop; i++) {
Path p = new Path("/test" + i);