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YARN-6654. RollingLevelDBTimelineStore backwards incompatible after fst upgrade. Contributed by Jonathan Eagles

This commit is contained in:
Jason Lowe 2017-07-13 17:27:40 -05:00
parent 945c0958bb
commit 5f1ee72b0e
1 changed files with 41 additions and 9 deletions
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34
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-applicationhistoryservice/src/main/java/org/apache/hadoop/yarn/server/timeline/RollingLevelDBTimelineStore.java
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@ -28,6 +28,7 @@ import java.util.Collection;
import java.util.Collections;
import java.util.Comparator;
import java.util.EnumSet;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
@ -74,6 +75,7 @@ import org.iq80.leveldb.Options;
import org.iq80.leveldb.ReadOptions;
import org.iq80.leveldb.WriteBatch;
import org.nustaq.serialization.FSTConfiguration;
import org.nustaq.serialization.FSTClazzNameRegistry;
import static java.nio.charset.StandardCharsets.UTF_8;
@ -170,9 +172,22 @@ public class RollingLevelDBTimelineStore extends AbstractService implements
.getLog(RollingLevelDBTimelineStore.class);
private static FSTConfiguration fstConf =
FSTConfiguration.createDefaultConfiguration();
// Fall back to 2.24 parsing if 2.50 parsing fails
private static FSTConfiguration fstConf224 =
FSTConfiguration.createDefaultConfiguration();
// Static class code for 2.24
private static final int LINKED_HASH_MAP_224_CODE = 83;
static {
fstConf.setShareReferences(false);
fstConf224.setShareReferences(false);
// YARN-6654 unable to find class for code 83 (LinkedHashMap)
// The linked hash map was changed between 2.24 and 2.50 so that
// the static code for LinkedHashMap (83) was changed to a dynamic
// code.
FSTClazzNameRegistry registry = fstConf224.getClassRegistry();
registry.registerClass(
LinkedHashMap.class, LINKED_HASH_MAP_224_CODE, fstConf224);
}
@Private
@ -365,7 +380,7 @@ public class RollingLevelDBTimelineStore extends AbstractService implements
private final long ttl;
private final long ttlInterval;
public EntityDeletionThread(Configuration conf) {
EntityDeletionThread(Configuration conf) {
ttl = conf.getLong(TIMELINE_SERVICE_TTL_MS,
DEFAULT_TIMELINE_SERVICE_TTL_MS);
ttlInterval = conf.getLong(
@ -479,11 +494,17 @@ public class RollingLevelDBTimelineStore extends AbstractService implements
try {
o = fstConf.asObject(iterator.peekNext().getValue());
entity.addOtherInfo(keyStr, o);
} catch (Exception ignore) {
try {
// Fall back to 2.24 parser
o = fstConf224.asObject(iterator.peekNext().getValue());
entity.addOtherInfo(keyStr, o);
} catch (Exception e) {
LOG.warn("Error while decoding "
+ entityId + ":otherInfo:" + keyStr, e);
}
}
}
} else if (key[prefixlen] == RELATED_ENTITIES_COLUMN[0]) {
if (relatedEntities) {
addRelatedEntity(entity, key, prefixlen
@ -1348,9 +1369,14 @@ public class RollingLevelDBTimelineStore extends AbstractService implements
Object o = null;
try {
o = fstConf.asObject(value);
} catch (Exception ignore) {
try {
// Fall back to 2.24 parser
o = fstConf224.asObject(value);
} catch (Exception e) {
LOG.warn("Error while decoding " + tstype, e);
}
}
if (o == null) {
event.setEventInfo(null);
} else if (o instanceof Map) {
@ -1378,10 +1404,16 @@ public class RollingLevelDBTimelineStore extends AbstractService implements
try {
value = fstConf.asObject(bytes);
entity.addPrimaryFilter(name, value);
} catch (Exception ignore) {
try {
// Fall back to 2.24 parser
value = fstConf224.asObject(bytes);
entity.addPrimaryFilter(name, value);
} catch (Exception e) {
LOG.warn("Error while decoding " + name, e);
}
}
}
/**
* Creates a string representation of the byte array from the given offset to