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HDDS-11911. Return consistent error code when snapshot is not found in the DB or Snapshot Chain. #7557

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Merged
sadanand48 merged 4 commits into from
Dec 12, 2024
Merged

HDDS-11911. Return consistent error code when snapshot is not found in the DB or Snapshot Chain. #7557

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9d2e6d0
HDDS-11911. Fix ResultCode when snapshot is not found in the DB or Sn…
Dec 11, 2024
765ef30
fix findbugs
Dec 11, 2024
337b900
address comment
Dec 11, 2024
01a02f7
Merge branch 'master' into HDDS-11911
Dec 11, 2024
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7 changes: 4 additions & 3 deletions hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/OmSnapshotManager.java
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Original file line number Diff line number Diff line change
Expand Up @@ -98,8 +98,8 @@
import static org.apache.hadoop.ozone.om.OMConfigKeys.OZONE_OM_SNAPSHOT_DIFF_DB_DIR;
import static org.apache.hadoop.ozone.om.OMConfigKeys.OZONE_OM_SNAPSHOT_DIFF_REPORT_MAX_PAGE_SIZE;
import static org.apache.hadoop.ozone.om.OMConfigKeys.OZONE_OM_SNAPSHOT_DIFF_REPORT_MAX_PAGE_SIZE_DEFAULT;
import static org.apache.hadoop.ozone.om.exceptions.OMException.ResultCodes.FILE_NOT_FOUND;
import static org.apache.hadoop.ozone.om.exceptions.OMException.ResultCodes.INVALID_KEY_NAME;
import static org.apache.hadoop.ozone.om.exceptions.OMException.ResultCodes.INVALID_SNAPSHOT_ERROR;
import static org.apache.hadoop.ozone.om.snapshot.SnapshotDiffManager.getSnapshotRootPath;
import static org.apache.hadoop.ozone.om.snapshot.SnapshotUtils.checkSnapshotActive;
import static org.apache.hadoop.ozone.om.snapshot.SnapshotUtils.dropColumnFamilyHandle;
Expand Down Expand Up @@ -351,7 +351,8 @@ public OmSnapshot load(@Nonnull UUID snapshotId) throws IOException {
// If it happens, then either snapshot has been purged in between or SnapshotChain is corrupted
// and missing some entries which needs investigation.
if (snapshotTableKey == null) {
throw new IOException("No snapshot exist with snapshotId: " + snapshotId);
throw new OMException("Snapshot " + snapshotId +
" is not found in the snapshot chain.", FILE_NOT_FOUND);
}

final SnapshotInfo snapshotInfo = getSnapshotInfo(snapshotTableKey);
Expand Down Expand Up @@ -740,7 +741,7 @@ private SnapshotInfo getSnapshotInfo(String snapshotKey) throws IOException {
snapshotInfo = ozoneManager.getMetadataManager().getSnapshotInfoTable().getSkipCache(snapshotKey);
}
if (snapshotInfo == null) {
throw new OMException("Snapshot '" + snapshotKey + "' is not found.", INVALID_SNAPSHOT_ERROR);
throw new OMException("Snapshot '" + snapshotKey + "' is not found.", FILE_NOT_FOUND);
}
return snapshotInfo;
}
Expand Down
25 changes: 25 additions & 0 deletions ...p-ozone/ozone-manager/src/test/java/org/apache/hadoop/ozone/om/TestOmSnapshotManager.java
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Original file line number Diff line number Diff line change
Expand Up @@ -25,6 +25,7 @@
import org.apache.hadoop.hdds.utils.db.DBStore;
import org.apache.hadoop.hdds.utils.db.RDBBatchOperation;
import org.apache.hadoop.hdds.utils.db.Table;
import org.apache.hadoop.ozone.om.exceptions.OMException;
import org.apache.hadoop.ozone.om.helpers.OmBucketInfo;
import org.apache.hadoop.ozone.om.helpers.OmVolumeArgs;
import org.apache.hadoop.ozone.om.helpers.SnapshotInfo;
Expand Down Expand Up @@ -72,6 +73,7 @@
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertTrue;
import static org.junit.jupiter.api.Assertions.assertThrows;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.timeout;
import static org.mockito.Mockito.times;
Expand Down Expand Up @@ -314,6 +316,29 @@ public void testHardLinkCreation() throws IOException {
getINode(f1FileLink.toPath()), "link matches original file");
}


@Test
public void testGetSnapshotInfo() throws IOException {
SnapshotInfo s1 = createSnapshotInfo("vol", "buck");
UUID latestGlobalSnapId =
((OmMetadataManagerImpl) om.getMetadataManager()).getSnapshotChainManager()
.getLatestGlobalSnapshotId();
UUID latestPathSnapId =
((OmMetadataManagerImpl) om.getMetadataManager()).getSnapshotChainManager()
.getLatestPathSnapshotId(String.join("/", "vol", "buck"));
s1.setPathPreviousSnapshotId(latestPathSnapId);
s1.setGlobalPreviousSnapshotId(latestGlobalSnapId);
((OmMetadataManagerImpl) om.getMetadataManager()).getSnapshotChainManager()
.addSnapshot(s1);
OMException ome = assertThrows(OMException.class,
() -> om.getOmSnapshotManager().getSnapshot(s1.getSnapshotId()));
assertEquals(OMException.ResultCodes.FILE_NOT_FOUND, ome.getResult());
// not present in snapshot chain too
SnapshotInfo s2 = createSnapshotInfo("vol", "buck");
ome = assertThrows(OMException.class,
() -> om.getOmSnapshotManager().getSnapshot(s2.getSnapshotId()));
assertEquals(OMException.ResultCodes.FILE_NOT_FOUND, ome.getResult());
}
/*
* Test that exclude list is generated correctly.
*/
Expand Down
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