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Fix translog bwc serialization (#36676) 

Serializing of a Translog#Index from v7.0.0 to 6.x is broken since
#29224 where we removed the _parent field.

Relates #29224
This commit is contained in:
Nhat Nguyen 2018-12-19 11:19:25 -05:00 committed by GitHub
parent 9b1534b79b
commit b63f9b967c
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2 changed files with 10 additions and 0 deletions
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3
server/src/main/java/org/elasticsearch/index/translog/Translog.java
View File

@ -1227,6 +1227,9 @@ public class Translog extends AbstractIndexShardComponent implements IndexShardC
out.writeString(type);
out.writeBytesReference(source);
out.writeOptionalString(routing);
if (format < FORMAT_NO_PARENT) {
out.writeOptionalString(null); // _parent
}
out.writeLong(version);
if (format < FORMAT_NO_VERSION_TYPE) {
out.writeByte(VersionType.EXTERNAL.getValue());

7
server/src/test/java/org/elasticsearch/index/translog/TranslogTests.java
View File

@ -35,6 +35,7 @@ import org.apache.lucene.store.MockDirectoryWrapper;
import org.apache.lucene.util.LineFileDocs;
import org.apache.lucene.util.LuceneTestCase;
import org.elasticsearch.Assertions;
import org.elasticsearch.Version;
import org.elasticsearch.cluster.metadata.IndexMetaData;
import org.elasticsearch.common.Randomness;
import org.elasticsearch.common.Strings;
@ -72,6 +73,7 @@ import org.elasticsearch.index.shard.ShardId;
import org.elasticsearch.index.translog.Translog.Location;
import org.elasticsearch.test.ESTestCase;
import org.elasticsearch.test.IndexSettingsModule;
import org.elasticsearch.test.VersionUtils;
import org.hamcrest.Matchers;
import org.junit.After;
import org.junit.Before;
@ -2814,9 +2816,12 @@ public class TranslogTests extends ESTestCase {
Engine.IndexResult eIndexResult = new Engine.IndexResult(1, randomPrimaryTerm, randomSeqNum, true);
Translog.Index index = new Translog.Index(eIndex, eIndexResult);
Version wireVersion = VersionUtils.randomVersionBetween(random(), Version.CURRENT.minimumCompatibilityVersion(), Version.CURRENT);
BytesStreamOutput out = new BytesStreamOutput();
out.setVersion(wireVersion);
Translog.Operation.writeOperation(out, index);
StreamInput in = out.bytes().streamInput();
in.setVersion(wireVersion);
Translog.Index serializedIndex = (Translog.Index) Translog.Operation.readOperation(in);
assertEquals(index, serializedIndex);
@ -2826,8 +2831,10 @@ public class TranslogTests extends ESTestCase {
Translog.Delete delete = new Translog.Delete(eDelete, eDeleteResult);
out = new BytesStreamOutput();
out.setVersion(wireVersion);
Translog.Operation.writeOperation(out, delete);
in = out.bytes().streamInput();
in.setVersion(wireVersion);
Translog.Delete serializedDelete = (Translog.Delete) Translog.Operation.readOperation(in);
assertEquals(delete, serializedDelete);
}