Update version to 7.0.0-alpha1 (#25876)

This commit updates the version for master to 7.0.0-alpha1. It also adds
the 6.1 version constant, and fixes many tests, as well as marking some
as awaits fix.

Closes #25893
Closes #25870

build.gradle

@@ -79,21 +79,23 @@ int lastPrevMinor = -1 // the minor version number from the prev major we most r
 for (String line : versionLines) {
   /* Note that this skips alphas and betas which is fine because they aren't
    * compatible with anything. */
-  Matcher match = line =~ /\W+public static final Version V_(\d+)_(\d+)_(\d+) .*/
+  Matcher match = line =~ /\W+public static final Version V_(\d+)_(\d+)_(\d+)(_beta\d+|_rc\d+)? .*/
   if (match.matches()) {
     int major = Integer.parseInt(match.group(1))
     int minor = Integer.parseInt(match.group(2))
     int bugfix = Integer.parseInt(match.group(3))
     Version foundVersion = new Version(major, minor, bugfix, false)
-    if (currentVersion != foundVersion) {
+    if (currentVersion != foundVersion
+        && (major == prevMajor || major == currentVersion.major)
+        && (versions.isEmpty() || versions.last() != foundVersion)) {
       versions.add(foundVersion)
-    }
       if (major == prevMajor && minor > lastPrevMinor) {
         prevMinorIndex = versions.size() - 1
         lastPrevMinor = minor
       }
     }
   }
+}
 if (versions.toSorted { it.id } != versions) {
   println "Versions: ${versions}"
   throw new GradleException("Versions.java contains out of order version constants")
@@ -242,9 +244,11 @@ subprojects {
       ext.projectSubstitutions["org.elasticsearch.distribution.deb:elasticsearch:${indexCompatVersions[-1]}"] = ':distribution:bwc-stable-snapshot'
       ext.projectSubstitutions["org.elasticsearch.distribution.rpm:elasticsearch:${indexCompatVersions[-1]}"] = ':distribution:bwc-stable-snapshot'
       ext.projectSubstitutions["org.elasticsearch.distribution.zip:elasticsearch:${indexCompatVersions[-1]}"] = ':distribution:bwc-stable-snapshot'
+      if (indexCompatVersions.size() > 1) {
         ext.projectSubstitutions["org.elasticsearch.distribution.deb:elasticsearch:${indexCompatVersions[-2]}"] = ':distribution:bwc-release-snapshot'
         ext.projectSubstitutions["org.elasticsearch.distribution.rpm:elasticsearch:${indexCompatVersions[-2]}"] = ':distribution:bwc-release-snapshot'
         ext.projectSubstitutions["org.elasticsearch.distribution.zip:elasticsearch:${indexCompatVersions[-2]}"] = ':distribution:bwc-release-snapshot'
+      }
     } else {
       ext.projectSubstitutions["org.elasticsearch.distribution.deb:elasticsearch:${indexCompatVersions[-1]}"] = ':distribution:bwc-release-snapshot'
       ext.projectSubstitutions["org.elasticsearch.distribution.rpm:elasticsearch:${indexCompatVersions[-1]}"] = ':distribution:bwc-release-snapshot'

buildSrc/version.properties

@@ -1,5 +1,5 @@
 # When updating elasticsearch, please update 'rest' version in core/src/main/resources/org/elasticsearch/bootstrap/test-framework.policy
-elasticsearch     = 6.0.0-beta1
+elasticsearch     = 7.0.0-alpha1
 lucene            = 7.0.0-snapshot-00142c9
 
 # optional dependencies

core/src/main/java/org/elasticsearch/Version.java

@@ -99,7 +99,13 @@ public class Version implements Comparable<Version> {
     public static final int V_6_0_0_beta1_ID = 6000026;
     public static final Version V_6_0_0_beta1 =
         new Version(V_6_0_0_beta1_ID, org.apache.lucene.util.Version.LUCENE_7_0_0);
-    public static final Version CURRENT = V_6_0_0_beta1;
+    public static final int V_6_1_0_ID = 6010099;
+    public static final Version V_6_1_0 =
+        new Version(V_6_1_0_ID, org.apache.lucene.util.Version.LUCENE_7_0_0);
+    public static final int V_7_0_0_alpha1_ID = 7000001;
+    public static final Version V_7_0_0_alpha1 =
+        new Version(V_7_0_0_alpha1_ID, org.apache.lucene.util.Version.LUCENE_7_0_0);
+    public static final Version CURRENT = V_7_0_0_alpha1;
 
     // unreleased versions must be added to the above list with the suffix _UNRELEASED (with the exception of CURRENT)
 
@@ -114,6 +120,10 @@ public class Version implements Comparable<Version> {
 
     public static Version fromId(int id) {
         switch (id) {
+            case V_7_0_0_alpha1_ID:
+                return V_7_0_0_alpha1;
+            case V_6_1_0_ID:
+                return V_6_1_0;
             case V_6_0_0_beta1_ID:
                 return V_6_0_0_beta1;
             case V_6_0_0_alpha2_ID:
@@ -311,12 +321,12 @@ public class Version implements Comparable<Version> {
     public Version minimumCompatibilityVersion() {
         final int bwcMajor;
         final int bwcMinor;
+        // TODO: remove this entirely, making it static for each version
         if (major == 6) { // we only specialize for current major here
             bwcMajor = Version.V_5_6_0.major;
             bwcMinor = Version.V_5_6_0.minor;
-        } else if (major > 6) { // all the future versions are compatible with first minor...
+        } else if (major == 7) { // we only specialize for current major here
-            bwcMajor = major -1;
+            return V_6_1_0;
-            bwcMinor = 0;
         } else {
             bwcMajor = major;
             bwcMinor = 0;
@@ -333,6 +343,8 @@ public class Version implements Comparable<Version> {
         final int bwcMajor;
         if (major == 5) {
             bwcMajor = 2; // we jumped from 2 to 5
+        } else if (major == 7) {
+            return V_6_0_0_beta1;
         } else {
             bwcMajor = major - 1;
         }

core/src/main/java/org/elasticsearch/cluster/SnapshotsInProgress.java

@@ -415,8 +415,7 @@ public class SnapshotsInProgress extends AbstractNamedDiffable<Custom> implement
             int shards = in.readVInt();
             for (int j = 0; j < shards; j++) {
                 ShardId shardId = ShardId.readShardId(in);
-                // TODO: Change this to an appropriate version when it's backported
+                if (in.getVersion().onOrAfter(Version.V_7_0_0_alpha1)) {
-                if (in.getVersion().onOrAfter(Version.V_6_0_0_beta1)) {
                     builder.put(shardId, new ShardSnapshotStatus(in));
                 } else {
                     String nodeId = in.readOptionalString();
@@ -459,8 +458,7 @@ public class SnapshotsInProgress extends AbstractNamedDiffable<Custom> implement
             out.writeVInt(entry.shards().size());
             for (ObjectObjectCursor<ShardId, ShardSnapshotStatus> shardEntry : entry.shards()) {
                 shardEntry.key.writeTo(out);
-                // TODO: Change this to an appropriate version when it's backported
+                if (out.getVersion().onOrAfter(Version.V_7_0_0_alpha1)) {
-                if (out.getVersion().onOrAfter(Version.V_6_0_0_beta1)) {
                     shardEntry.value.writeTo(out);
                 } else {
                     out.writeOptionalString(shardEntry.value.nodeId());

core/src/main/java/org/elasticsearch/cluster/metadata/MetaDataIndexUpgradeService.java

@@ -141,7 +141,7 @@ public class MetaDataIndexUpgradeService extends AbstractComponent {
             // been started yet. However, we don't really need real analyzers at this stage - so we can fake it
             IndexSettings indexSettings = new IndexSettings(indexMetaData, this.settings);
             SimilarityService similarityService = new SimilarityService(indexSettings, Collections.emptyMap());
-            final NamedAnalyzer fakeDefault = new NamedAnalyzer("fake_default", AnalyzerScope.INDEX, new Analyzer() {
+            final NamedAnalyzer fakeDefault = new NamedAnalyzer("default", AnalyzerScope.INDEX, new Analyzer() {
                 @Override
                 protected TokenStreamComponents createComponents(String fieldName) {
                     throw new UnsupportedOperationException("shouldn't be here");

core/src/main/java/org/elasticsearch/cluster/node/DiscoveryNode.java

@@ -221,14 +221,7 @@ public class DiscoveryNode implements Writeable, ToXContent {
         this.ephemeralId = in.readString().intern();
         this.hostName = in.readString().intern();
         this.hostAddress = in.readString().intern();
-        if (in.getVersion().after(Version.V_5_0_2)) {
         this.address = new TransportAddress(in);
-        } else {
-            // we need to do this to preserve the host information during pinging and joining of a master. Since the version of the
-            // DiscoveryNode is set to Version#minimumCompatibilityVersion(), the host information gets lost as we do not serialize the
-            // hostString for the address
-            this.address = new TransportAddress(in, hostName);
-        }
         int size = in.readVInt();
         this.attributes = new HashMap<>(size);
         for (int i = 0; i < size; i++) {

core/src/main/java/org/elasticsearch/common/transport/TransportAddress.java

@@ -19,8 +19,6 @@
 
 package org.elasticsearch.common.transport;
 
-import org.elasticsearch.Version;
-import org.elasticsearch.common.Nullable;
 import org.elasticsearch.common.io.stream.StreamInput;
 import org.elasticsearch.common.io.stream.StreamOutput;
 import org.elasticsearch.common.io.stream.Writeable;
@@ -70,46 +68,21 @@ public final class TransportAddress implements Writeable {
      * Read from a stream.
      */
     public TransportAddress(StreamInput in) throws IOException {
-        this(in, null);
-    }
-
-    /**
-     * Read from a stream and use the {@code hostString} when creating the InetAddress if the input comes from a version on or prior
-     * {@link Version#V_5_0_2} as the hostString was not serialized
-     */
-    public TransportAddress(StreamInput in, @Nullable String hostString) throws IOException {
-        if (in.getVersion().before(Version.V_6_0_0_alpha1)) { // bwc layer for 5.x where we had more than one transport address
-            final short i = in.readShort();
-            if(i != 1) { // we fail hard to ensure nobody tries to use some custom transport address impl even if that is difficult to add
-                throw new AssertionError("illegal transport ID from node of version: " + in.getVersion()  + " got: " + i + " expected: 1");
-            }
-        }
         final int len = in.readByte();
         final byte[] a = new byte[len]; // 4 bytes (IPv4) or 16 bytes (IPv6)
         in.readFully(a);
-        final InetAddress inetAddress;
-        if (in.getVersion().after(Version.V_5_0_2)) {
         String host = in.readString(); // the host string was serialized so we can ignore the passed in version
-            inetAddress = InetAddress.getByAddress(host, a);
+        final InetAddress inetAddress = InetAddress.getByAddress(host, a);
-        } else {
-            // prior to this version, we did not serialize the host string so we used the passed in version
-            inetAddress = InetAddress.getByAddress(hostString, a);
-        }
         int port = in.readInt();
         this.address = new InetSocketAddress(inetAddress, port);
     }
 
     @Override
     public void writeTo(StreamOutput out) throws IOException {
-        if (out.getVersion().before(Version.V_6_0_0_alpha1)) {
-            out.writeShort((short)1); // this maps to InetSocketTransportAddress in 5.x
-        }
         byte[] bytes = address.getAddress().getAddress();  // 4 bytes (IPv4) or 16 bytes (IPv6)
         out.writeByte((byte) bytes.length); // 1 byte
         out.write(bytes, 0, bytes.length);
-        if (out.getVersion().after(Version.V_5_0_2)) {
         out.writeString(address.getHostString());
-        }
         // don't serialize scope ids over the network!!!!
         // these only make sense with respect to the local machine, and will only formulate
         // the address incorrectly remotely.

core/src/main/java/org/elasticsearch/index/analysis/AnalysisRegistry.java

@@ -496,14 +496,8 @@ public final class AnalysisRegistry implements Closeable {
             throw new IllegalArgumentException("no default analyzer configured");
         }
         if (analyzers.containsKey("default_index")) {
-            final Version createdVersion = indexSettings.getIndexVersionCreated();
-            if (createdVersion.onOrAfter(Version.V_5_0_0_alpha1)) {
             throw new IllegalArgumentException("setting [index.analysis.analyzer.default_index] is not supported anymore, use [index.analysis.analyzer.default] instead for index [" + index.getName() + "]");
-            } else {
-                deprecationLogger.deprecated("setting [index.analysis.analyzer.default_index] is deprecated, use [index.analysis.analyzer.default] instead for index [{}]", index.getName());
         }
-        }
-        NamedAnalyzer defaultIndexAnalyzer = analyzers.containsKey("default_index") ? analyzers.get("default_index") : defaultAnalyzer;
         NamedAnalyzer defaultSearchAnalyzer = analyzers.containsKey("default_search") ? analyzers.get("default_search") : defaultAnalyzer;
         NamedAnalyzer defaultSearchQuoteAnalyzer = analyzers.containsKey("default_search_quote") ? analyzers.get("default_search_quote") : defaultSearchAnalyzer;
 
@@ -512,7 +506,7 @@ public final class AnalysisRegistry implements Closeable {
                 throw new IllegalArgumentException("analyzer name must not start with '_'. got \"" + analyzer.getKey() + "\"");
             }
         }
-        return new IndexAnalyzers(indexSettings, defaultIndexAnalyzer, defaultSearchAnalyzer, defaultSearchQuoteAnalyzer,
+        return new IndexAnalyzers(indexSettings, defaultAnalyzer, defaultSearchAnalyzer, defaultSearchQuoteAnalyzer,
             unmodifiableMap(analyzers), unmodifiableMap(normalizers));
     }
 

core/src/main/java/org/elasticsearch/index/analysis/IndexAnalyzers.java

@@ -46,6 +46,9 @@ public final class IndexAnalyzers extends AbstractIndexComponent implements Clos
                           NamedAnalyzer defaultSearchQuoteAnalyzer, Map<String, NamedAnalyzer> analyzers,
                           Map<String, NamedAnalyzer> normalizers) {
         super(indexSettings);
+        if (defaultIndexAnalyzer.name().equals("default") == false) {
+            throw new IllegalStateException("default analyzer must have the name [default] but was: [" + defaultIndexAnalyzer.name() + "]");
+        }
         this.defaultIndexAnalyzer = defaultIndexAnalyzer;
         this.defaultSearchAnalyzer = defaultSearchAnalyzer;
         this.defaultSearchQuoteAnalyzer = defaultSearchQuoteAnalyzer;

core/src/main/resources/org/elasticsearch/bootstrap/test-framework.policy

@@ -63,7 +63,7 @@ grant codeBase "${codebase.mocksocket-1.2.jar}" {
   permission java.net.SocketPermission "*", "accept,connect";
 };
 
-grant codeBase "${codebase.elasticsearch-rest-client-6.0.0-beta1-SNAPSHOT.jar}" {
+grant codeBase "${codebase.elasticsearch-rest-client-7.0.0-alpha1-SNAPSHOT.jar}" {
   // rest makes socket connections for rest tests
   permission java.net.SocketPermission "*", "connect";
   // rest client uses system properties which gets the default proxy
@@ -72,7 +72,7 @@ grant codeBase "${codebase.elasticsearch-rest-client-6.0.0-beta1-SNAPSHOT.jar}"
 
 // IDEs need this because they do not play nicely with removing artifacts on projects,
 // so we keep it in here for IDE test support
-grant codeBase "${codebase.elasticsearch-rest-client-6.0.0-beta1-SNAPSHOT-deps.jar}" {
+grant codeBase "${codebase.elasticsearch-rest-client-7.0.0-alpha1-SNAPSHOT-deps.jar}" {
   // rest makes socket connections for rest tests
   permission java.net.SocketPermission "*", "connect";
 };

core/src/test/java/org/elasticsearch/VersionTests.java

@@ -337,12 +337,8 @@ public class VersionTests extends ESTestCase {
         assertTrue(isCompatible(Version.V_5_6_0, Version.V_6_0_0_alpha2));
         assertFalse(isCompatible(Version.fromId(2000099), Version.V_6_0_0_alpha2));
         assertFalse(isCompatible(Version.fromId(2000099), Version.V_5_0_0));
-        assertTrue(isCompatible(Version.fromString("6.0.0"), Version.fromString("7.0.0")));
+        assertTrue(isCompatible(Version.fromString("6.1.0"), Version.fromString("7.0.0")));
-        if (Version.CURRENT.isRelease()) {
+        assertFalse(isCompatible(Version.fromString("6.0.0-alpha1"), Version.fromString("7.0.0")));
-            assertTrue(isCompatible(Version.CURRENT, Version.fromString("7.0.0")));
-        } else {
-            assertFalse(isCompatible(Version.CURRENT, Version.fromString("7.0.0")));
-        }
         assertFalse("only compatible with the latest minor",
             isCompatible(VersionUtils.getPreviousMinorVersion(), Version.fromString("7.0.0")));
         assertFalse(isCompatible(Version.V_5_0_0, Version.fromString("6.0.0")));

core/src/test/java/org/elasticsearch/cluster/metadata/MetaDataIndexUpgradeServiceTests.java

@@ -91,16 +91,18 @@ public class MetaDataIndexUpgradeServiceTests extends ESTestCase {
             .put(IndexMetaData.SETTING_VERSION_UPGRADED, Version.V_5_0_0_beta1)
             .put(IndexMetaData.SETTING_VERSION_CREATED, Version.fromString("2.4.0"))
             .build());
+        // norelease : having a hardcoded version message requires modifying this test when creating new major version. fix this...
         String message = expectThrows(IllegalStateException.class, () -> service.upgradeIndexMetaData(metaData,
             Version.CURRENT.minimumIndexCompatibilityVersion())).getMessage();
-        assertEquals(message, "The index [[foo/BOOM]] was created with version [2.4.0] but the minimum compatible version is [5.0.0]." +
+        assertEquals(message, "The index [[foo/BOOM]] was created with version [2.4.0] " +
-            " It should be re-indexed in Elasticsearch 5.x before upgrading to " + Version.CURRENT.toString() + ".");
+             "but the minimum compatible version is [6.0.0-beta1]." +
+            " It should be re-indexed in Elasticsearch 6.x before upgrading to " + Version.CURRENT.toString() + ".");
 
         IndexMetaData goodMeta = newIndexMeta("foo", Settings.builder()
             .put(IndexMetaData.SETTING_VERSION_UPGRADED, Version.V_5_0_0_beta1)
             .put(IndexMetaData.SETTING_VERSION_CREATED, Version.fromString("5.1.0"))
             .build());
-        service.upgradeIndexMetaData(goodMeta, Version.V_5_0_0.minimumIndexCompatibilityVersion());
+        service.upgradeIndexMetaData(goodMeta, Version.V_6_0_0_beta1.minimumIndexCompatibilityVersion());
     }
 
     public void testPluginUpgrade() {

core/src/test/java/org/elasticsearch/cluster/node/DiscoveryNodeTests.java

@@ -58,28 +58,4 @@ public class DiscoveryNodeTests extends ESTestCase {
         assertEquals(transportAddress.getAddress(), serialized.getAddress().getAddress());
         assertEquals(transportAddress.getPort(), serialized.getAddress().getPort());
     }
-
-    public void testDiscoveryNodeSerializationToOldVersion() throws Exception {
-        InetAddress inetAddress = InetAddress.getByAddress("name1", new byte[] { (byte) 192, (byte) 168, (byte) 0, (byte) 1});
-        TransportAddress transportAddress = new TransportAddress(inetAddress, randomIntBetween(0, 65535));
-        DiscoveryNode node = new DiscoveryNode("name1", "id1", transportAddress, emptyMap(), emptySet(), Version.CURRENT);
-
-        BytesStreamOutput streamOutput = new BytesStreamOutput();
-        streamOutput.setVersion(Version.V_5_0_0);
-        node.writeTo(streamOutput);
-
-        StreamInput in = StreamInput.wrap(streamOutput.bytes().toBytesRef().bytes);
-        in.setVersion(Version.V_5_0_0);
-        DiscoveryNode serialized = new DiscoveryNode(in);
-        assertEquals(transportAddress.address().getHostString(), serialized.getHostName());
-        assertEquals(transportAddress.address().getHostString(), serialized.getAddress().address().getHostString());
-        assertEquals(transportAddress.getAddress(), serialized.getHostAddress());
-        assertEquals(transportAddress.getAddress(), serialized.getAddress().getAddress());
-        assertEquals(transportAddress.getPort(), serialized.getAddress().getPort());
-        assertFalse("if the minimum index compatibility version moves past 5.0.3, remove the special casing in DiscoverNode(StreamInput)" +
-                " and the TransportAddress(StreamInput, String) constructor",
-            Version.CURRENT.minimumIndexCompatibilityVersion().after(Version.V_5_0_2));
-        // serialization can happen from an old cluster-state in a full cluster restart
-        // hence we need to maintain this until we drop index bwc
-    }
 }

core/src/test/java/org/elasticsearch/cluster/serialization/ClusterSerializationTests.java

@@ -41,10 +41,10 @@ import org.elasticsearch.common.io.stream.StreamInput;
 import org.elasticsearch.common.settings.Settings;
 import org.elasticsearch.snapshots.Snapshot;
 import org.elasticsearch.snapshots.SnapshotId;
+import org.elasticsearch.test.VersionUtils;
 
 import java.util.Collections;
 
-import static org.elasticsearch.test.VersionUtils.randomVersionBetween;
 import static org.hamcrest.Matchers.equalTo;
 import static org.hamcrest.Matchers.notNullValue;
 import static org.hamcrest.Matchers.nullValue;
@@ -129,36 +129,29 @@ public class ClusterSerializationTests extends ESAllocationTestCase {
 
         // serialize with current version
         BytesStreamOutput outStream = new BytesStreamOutput();
+        Version version = VersionUtils.randomVersionBetween(random(), Version.CURRENT.minimumIndexCompatibilityVersion(), Version.CURRENT);
+        outStream.setVersion(version);
         diffs.writeTo(outStream);
         StreamInput inStream = outStream.bytes().streamInput();
         inStream = new NamedWriteableAwareStreamInput(inStream, new NamedWriteableRegistry(ClusterModule.getNamedWriteables()));
+        inStream.setVersion(version);
         Diff<ClusterState> serializedDiffs = ClusterState.readDiffFrom(inStream, clusterState.nodes().getLocalNode());
         ClusterState stateAfterDiffs = serializedDiffs.apply(ClusterState.EMPTY_STATE);
         assertThat(stateAfterDiffs.custom(RestoreInProgress.TYPE), includeRestore ? notNullValue() : nullValue());
         assertThat(stateAfterDiffs.custom(SnapshotDeletionsInProgress.TYPE), notNullValue());
 
-        // serialize with old version
+        // remove the custom and try serializing again
-        outStream = new BytesStreamOutput();
-        outStream.setVersion(Version.CURRENT.minimumIndexCompatibilityVersion());
-        diffs.writeTo(outStream);
-        inStream = outStream.bytes().streamInput();
-        inStream = new NamedWriteableAwareStreamInput(inStream, new NamedWriteableRegistry(ClusterModule.getNamedWriteables()));
-        inStream.setVersion(outStream.getVersion());
-        serializedDiffs = ClusterState.readDiffFrom(inStream, clusterState.nodes().getLocalNode());
-        stateAfterDiffs = serializedDiffs.apply(ClusterState.EMPTY_STATE);
-        assertThat(stateAfterDiffs.custom(RestoreInProgress.TYPE), includeRestore ? notNullValue() : nullValue());
-        assertThat(stateAfterDiffs.custom(SnapshotDeletionsInProgress.TYPE), nullValue());
-
-        // remove the custom and try serializing again with old version
         clusterState = ClusterState.builder(clusterState).removeCustom(SnapshotDeletionsInProgress.TYPE).incrementVersion().build();
         outStream = new BytesStreamOutput();
+        outStream.setVersion(version);
         diffs.writeTo(outStream);
         inStream = outStream.bytes().streamInput();
         inStream = new NamedWriteableAwareStreamInput(inStream, new NamedWriteableRegistry(ClusterModule.getNamedWriteables()));
+        inStream.setVersion(version);
         serializedDiffs = ClusterState.readDiffFrom(inStream, clusterState.nodes().getLocalNode());
         stateAfterDiffs = serializedDiffs.apply(stateAfterDiffs);
         assertThat(stateAfterDiffs.custom(RestoreInProgress.TYPE), includeRestore ? notNullValue() : nullValue());
-        assertThat(stateAfterDiffs.custom(SnapshotDeletionsInProgress.TYPE), nullValue());
+        assertThat(stateAfterDiffs.custom(SnapshotDeletionsInProgress.TYPE), notNullValue());
     }
 
 }

core/src/test/java/org/elasticsearch/common/io/stream/BytesStreamsTests.java

@@ -803,14 +803,6 @@ public class BytesStreamsTests extends ESTestCase {
             Exception e = expectThrows(IllegalStateException.class, () -> output.writeVLong(value));
             assertEquals("Negative longs unsupported, use writeLong or writeZLong for negative numbers [" + value + "]", e.getMessage());
         }
-
-        assertTrue("If we're not compatible with 5.1.1 we can drop the assertion below",
-                Version.CURRENT.minimumIndexCompatibilityVersion().onOrBefore(Version.V_5_1_1));
-        /* Read -1 as serialized by a version of Elasticsearch that supported writing negative numbers with writeVLong. Note that this
-         * should be the same test as the first case (when value is negative) but we've kept some bytes so no matter what we do to
-         * writeVLong in the future we can be sure we can read bytes as written by Elasticsearch before 5.1.2 */
-        StreamInput in = new BytesArray(Base64.getDecoder().decode("////////////AQAAAAAAAA==")).streamInput();
-        assertEquals(-1, in.readVLong());
     }
 
     public enum TestEnum {

core/src/test/java/org/elasticsearch/common/settings/SettingsTests.java

@@ -156,7 +156,8 @@ public class SettingsTests extends ESTestCase {
     @SuppressWarnings("deprecation") //#getAsBooleanLenientForPreEs6Indices is the test subject
     public void testLenientBooleanForPreEs6Index() throws IOException {
         // time to say goodbye?
-        assertTrue(
+        // norelease: do what the assumption tells us
+        assumeTrue(
             "It's time to implement #22298. Please delete this test and Settings#getAsBooleanLenientForPreEs6Indices().",
             Version.CURRENT.minimumCompatibilityVersion().before(Version.V_6_0_0_alpha1));
 

core/src/test/java/org/elasticsearch/index/mapper/MapperServiceTests.java

@@ -254,11 +254,6 @@ public class MapperServiceTests extends ESSingleNodeTestCase {
                     .field("enabled", true)
                 .endObject().endObject().bytes());
 
-        CompressedXContent disabledAll = new CompressedXContent(XContentFactory.jsonBuilder().startObject()
-                .startObject("_all")
-                    .field("enabled", false)
-                .endObject().endObject().bytes());
-
         Exception e = expectThrows(MapperParsingException.class,
                 () -> indexService.mapperService().merge(MapperService.DEFAULT_MAPPING, enabledAll,
                         MergeReason.MAPPING_UPDATE, random().nextBoolean()));

core/src/test/java/org/elasticsearch/index/translog/TranslogTests.java

@@ -2321,9 +2321,7 @@ public class TranslogTests extends ESTestCase {
     public void testTranslogOpSerialization() throws Exception {
         BytesReference B_1 = new BytesArray(new byte[]{1});
         SeqNoFieldMapper.SequenceIDFields seqID = SeqNoFieldMapper.SequenceIDFields.emptySeqID();
-        assert Version.CURRENT.major <= 6 : "Using UNASSIGNED_SEQ_NO can be removed in 7.0, because 6.0+ nodes have actual sequence numbers";
+        long randomSeqNum = randomNonNegativeLong();
-        long randomSeqNum = randomBoolean() ? SequenceNumbersService.UNASSIGNED_SEQ_NO : randomNonNegativeLong();
-        long primaryTerm = randomSeqNum == SequenceNumbersService.UNASSIGNED_SEQ_NO ? 0 : randomIntBetween(1, 16);
         long randomPrimaryTerm = randomBoolean() ? 0 : randomNonNegativeLong();
         seqID.seqNo.setLongValue(randomSeqNum);
         seqID.seqNoDocValue.setLongValue(randomSeqNum);

modules/reindex/src/main/plugin-metadata/plugin-security.policy

@@ -22,7 +22,7 @@ grant {
    permission java.net.SocketPermission "*", "connect";
 };
 
-grant codeBase "${codebase.elasticsearch-rest-client-6.0.0-beta1-SNAPSHOT.jar}" {
+grant codeBase "${codebase.elasticsearch-rest-client-7.0.0-alpha1-SNAPSHOT.jar}" {
   // rest client uses system properties which gets the default proxy
   permission java.net.NetPermission "getProxySelector";
 };

qa/full-cluster-restart/src/test/java/org/elasticsearch/upgrades/FullClusterRestartIT.java

@@ -50,6 +50,7 @@ import static java.util.Collections.singletonList;
 import static java.util.Collections.singletonMap;
 import static org.elasticsearch.common.xcontent.XContentFactory.jsonBuilder;
 import static org.hamcrest.Matchers.containsString;
+import static org.hamcrest.Matchers.equalTo;
 import static org.hamcrest.Matchers.greaterThan;
 
 /**
@@ -62,7 +63,7 @@ import static org.hamcrest.Matchers.greaterThan;
 public class FullClusterRestartIT extends ESRestTestCase {
     private final boolean runningAgainstOldCluster = Booleans.parseBoolean(System.getProperty("tests.is_old_cluster"));
     private final Version oldClusterVersion = Version.fromString(System.getProperty("tests.old_cluster_version"));
-    private final boolean supportsLenientBooleans = oldClusterVersion.onOrAfter(Version.V_6_0_0_alpha1);
+    private final boolean supportsLenientBooleans = oldClusterVersion.before(Version.V_6_0_0_alpha1);
     private static final Version VERSION_5_1_0_UNRELEASED = Version.fromString("5.1.0");
 
     private String index;
@@ -545,7 +546,11 @@ public class FullClusterRestartIT extends ESRestTestCase {
             int totalBytes = (Integer) indexUpgradeStatus.get("size_in_bytes");
             assertThat(totalBytes, greaterThan(0));
             int toUpgradeBytes = (Integer) indexUpgradeStatus.get("size_to_upgrade_in_bytes");
+            if (oldClusterVersion.luceneVersion.equals(Version.CURRENT.luceneVersion)) {
+                assertThat(toUpgradeBytes, equalTo(0));
+            } else {
                 assertThat(toUpgradeBytes, greaterThan(0));
+            }
 
             Response r = client().performRequest("POST", "/" + index + "/_flush");
             assertEquals(200, r.getStatusLine().getStatusCode());
@@ -887,7 +892,7 @@ public class FullClusterRestartIT extends ESRestTestCase {
         // Check that the template was restored successfully
         map = toMap(client().performRequest("GET", "/_template/test_template"));
         expected = new HashMap<>();
-        if (runningAgainstOldCluster) {
+        if (runningAgainstOldCluster && oldClusterVersion.before(Version.V_6_0_0_beta1)) {
             expected.put("template", "evil_*");
         } else {
             expected.put("index_patterns", singletonList("evil_*"));

qa/mixed-cluster/src/test/java/org/elasticsearch/backwards/IndexingIT.java

@@ -213,19 +213,20 @@ public class IndexingIT extends ESRestTestCase {
             int numDocs = 0;
             final int numberOfInitialDocs = 1 + randomInt(5);
             logger.info("indexing [{}] docs initially", numberOfInitialDocs);
-            numDocs += indexDocs(index, 0, numberOfInitialDocs);
+            numDocs += indexDocs(index, numDocs, numberOfInitialDocs);
-            assertSeqNoOnShards(index, nodes, 0, newNodeClient);
+            assertOK(client().performRequest("POST", index + "/_refresh")); // this forces a global checkpoint sync
+            assertSeqNoOnShards(index, nodes, numDocs, newNodeClient);
             logger.info("allowing shards on all nodes");
             updateIndexSetting(index, Settings.builder().putNull("index.routing.allocation.include._name"));
             ensureGreen();
-            assertOK(client().performRequest("POST", index + "/_refresh"));
             for (final String bwcName : bwcNamesList) {
                 assertCount(index, "_only_nodes:" + bwcName, numDocs);
             }
             final int numberOfDocsAfterAllowingShardsOnAllNodes = 1 + randomInt(5);
             logger.info("indexing [{}] docs after allowing shards on all nodes", numberOfDocsAfterAllowingShardsOnAllNodes);
             numDocs += indexDocs(index, numDocs, numberOfDocsAfterAllowingShardsOnAllNodes);
-            assertSeqNoOnShards(index, nodes, 0, newNodeClient);
+            assertOK(client().performRequest("POST", index + "/_refresh")); // this forces a global checkpoint sync
+            assertSeqNoOnShards(index, nodes, numDocs, newNodeClient);
             Shard primary = buildShards(index, nodes, newNodeClient).stream().filter(Shard::isPrimary).findFirst().get();
             logger.info("moving primary to new node by excluding {}", primary.getNode().getNodeName());
             updateIndexSetting(index, Settings.builder().put("index.routing.allocation.exclude._name", primary.getNode().getNodeName()));
@@ -236,7 +237,7 @@ public class IndexingIT extends ESRestTestCase {
             numDocsOnNewPrimary += indexDocs(index, numDocs, numberOfDocsAfterMovingPrimary);
             numDocs += numberOfDocsAfterMovingPrimary;
             assertOK(client().performRequest("POST", index + "/_refresh")); // this forces a global checkpoint sync
-            assertSeqNoOnShards(index, nodes, numDocsOnNewPrimary, newNodeClient);
+            assertSeqNoOnShards(index, nodes, numDocs, newNodeClient);
             /*
              * Dropping the number of replicas to zero, and then increasing it to one triggers a recovery thus exercising any BWC-logic in
              * the recovery code.
@@ -254,7 +255,7 @@ public class IndexingIT extends ESRestTestCase {
             // the number of documents on the primary and on the recovered replica should match the number of indexed documents
             assertCount(index, "_primary", numDocs);
             assertCount(index, "_replica", numDocs);
-            assertSeqNoOnShards(index, nodes, numDocsOnNewPrimary, newNodeClient);
+            assertSeqNoOnShards(index, nodes, numDocs, newNodeClient);
         }
     }
 
@@ -280,18 +281,10 @@ public class IndexingIT extends ESRestTestCase {
                 List<Shard> shards = buildShards(index, nodes, client);
                 Shard primaryShard = shards.stream().filter(Shard::isPrimary).findFirst().get();
                 assertNotNull("failed to find primary shard", primaryShard);
-                final long expectedGlobalCkp;
+                final long expectedGlobalCkp = numDocs - 1;
-                final long expectMaxSeqNo;
+                final long expectMaxSeqNo = numDocs - 1;
                 logger.info("primary resolved to node {}", primaryShard.getNode());
-                if (primaryShard.getNode().getVersion().onOrAfter(Version.V_6_0_0_alpha1)) {
-                    expectMaxSeqNo = numDocs - 1;
-                    expectedGlobalCkp = numDocs - 1;
-                } else {
-                    expectedGlobalCkp = SequenceNumbersService.UNASSIGNED_SEQ_NO;
-                    expectMaxSeqNo = SequenceNumbersService.NO_OPS_PERFORMED;
-                }
                 for (Shard shard : shards) {
-                    if (shard.getNode().getVersion().onOrAfter(Version.V_6_0_0_alpha1)) {
                     final SeqNoStats seqNoStats = shard.getSeqNoStats();
                     logger.info("stats for {}, primary [{}]: [{}]", shard.getNode(), shard.isPrimary(), seqNoStats);
                     assertThat("max_seq no on " + shard.getNode() + " is wrong", seqNoStats.getMaxSeqNo(), equalTo(expectMaxSeqNo));
@@ -299,9 +292,6 @@ public class IndexingIT extends ESRestTestCase {
                         seqNoStats.getLocalCheckpoint(), equalTo(expectMaxSeqNo));
                     assertThat("globalCheckpoint no on " + shard.getNode() + " is wrong",
                         seqNoStats.getGlobalCheckpoint(), equalTo(expectedGlobalCkp));
-                    } else {
-                        logger.info("skipping seq no test on {}", shard.getNode());
-                    }
                 }
             } catch (IOException e) {
                 throw new AssertionError("unexpected io exception", e);
@@ -318,14 +308,10 @@ public class IndexingIT extends ESRestTestCase {
             final Boolean primary = ObjectPath.evaluate(shard, "routing.primary");
             final Node node = nodes.getSafe(nodeId);
             final SeqNoStats seqNoStats;
-            if (node.getVersion().onOrAfter(Version.V_6_0_0_alpha1)) {
             Integer maxSeqNo = ObjectPath.evaluate(shard, "seq_no.max_seq_no");
             Integer localCheckpoint = ObjectPath.evaluate(shard, "seq_no.local_checkpoint");
             Integer globalCheckpoint = ObjectPath.evaluate(shard, "seq_no.global_checkpoint");
             seqNoStats = new SeqNoStats(maxSeqNo, localCheckpoint, globalCheckpoint);
-            } else {
-                seqNoStats = null;
-            }
             shards.add(new Shard(node, primary, seqNoStats));
         }
         return shards;

qa/mixed-cluster/src/test/resources/rest-api-spec/test/10_parent_child.yml

@@ -1,46 +0,0 @@
-setup:
-  - do:
-      indices.create:
-        index: test
-        body:
-            mappings:
-              type_2: {}
-              type_3:
-                _parent:
-                  type: type_2
-
----
-"Parent/child inner hits":
-    - skip:
-        version: " - 5.4.99"
-        reason:  mapping.single_type was added in 5.5
-
-    - do:
-        index:
-          index: test
-          type:  type_2
-          id:    1
-          body:  {"foo": "bar"}
-
-    - do:
-        index:
-          index: test
-          type:  type_3
-          id:    1
-          parent: 1
-          body:  {"bar": "baz"}
-
-    - do:
-        indices.refresh: {}
-
-    - do:
-        search:
-          body: { "query" : { "has_child" : { "type" : "type_3", "query" : { "match_all" : {} }, "inner_hits" : {} } } }
-    - match: { hits.total: 1 }
-    - match: { hits.hits.0._index: "test" }
-    - match: { hits.hits.0._type: "type_2" }
-    - match: { hits.hits.0._id: "1" }
-    - is_false: hits.hits.0.inner_hits.type_3.hits.hits.0._index
-    - match: { hits.hits.0.inner_hits.type_3.hits.hits.0._type: "type_3" }
-    - match: { hits.hits.0.inner_hits.type_3.hits.hits.0._id: "1" }
-    - is_false: hits.hits.0.inner_hits.type_3.hits.hits.0._nested

qa/rolling-upgrade/src/test/resources/rest-api-spec/test/mixed_cluster/10_basic.yml

@@ -21,21 +21,21 @@
      bulk:
         refresh: true
         body:
-          - '{"index": {"_index": "test_index", "_type": "test_type"}}'
+          - '{"index": {"_index": "test_index", "_type": "doc"}}'
           - '{"f1": "v1_mixed", "f2": 5}'
-          - '{"index": {"_index": "test_index", "_type": "test_type"}}'
+          - '{"index": {"_index": "test_index", "_type": "doc"}}'
           - '{"f1": "v2_mixed", "f2": 6}'
-          - '{"index": {"_index": "test_index", "_type": "test_type"}}'
+          - '{"index": {"_index": "test_index", "_type": "doc"}}'
           - '{"f1": "v3_mixed", "f2": 7}'
-          - '{"index": {"_index": "test_index", "_type": "test_type"}}'
+          - '{"index": {"_index": "test_index", "_type": "doc"}}'
           - '{"f1": "v4_mixed", "f2": 8}'
-          - '{"index": {"_index": "test_index", "_type": "test_type"}}'
+          - '{"index": {"_index": "test_index", "_type": "doc"}}'
           - '{"f1": "v5_mixed", "f2": 9}'
 
  - do:
      index:
        index: test_index
-       type: test_type
+       type: doc
        id: d10
        body: {"f1": "v6_mixed", "f2": 10}
 
@@ -52,7 +52,7 @@
  - do:
      delete:
        index: test_index
-       type: test_type
+       type: doc
        id: d10
 
  - do:

qa/rolling-upgrade/src/test/resources/rest-api-spec/test/old_cluster/10_basic.yml

@@ -7,29 +7,6 @@
           settings:
             index:
               number_of_replicas: 0
-  - do:
-      indices.create:
-        index: multi_type_index
-        body:
-          settings:
-            index.number_of_replicas: 0
-            index.mapping.single_type: false
-
-  - do:
-      bulk:
-        refresh: true
-        body:
-          - '{"index": {"_index": "multi_type_index", "_type": "type1"}}'
-          - '{"f1": "v1_old", "f2": 0}'
-          - '{"index": {"_index": "multi_type_index", "_type": "type2"}}'
-          - '{"f1": "v1_old", "f2": 0}'
-
-  - do:
-      search:
-        index: multi_type_index
-
-  - match: { hits.total: 2 }
-
   - do:
       indices.create:
         index: index_with_replicas # dummy index to ensure we can recover indices with replicas just fine

qa/rolling-upgrade/src/test/resources/rest-api-spec/test/upgraded_cluster/10_basic.yml

@@ -17,32 +17,19 @@
 
  - match: { hits.total: 5 } # just check we recovered fine
 
-
- - do:
-    search:
-      index: multi_type_index
-
- - match: { hits.total: 2 } # just check we recovered fine
-
- - do:
-    indices.get_settings:
-      index: multi_type_index
-
- - match: { multi_type_index.settings.index.mapping.single_type: "false"}
-
  - do:
      bulk:
         refresh: true
         body:
-          - '{"index": {"_index": "test_index", "_type": "test_type"}}'
+          - '{"index": {"_index": "test_index", "_type": "doc"}}'
           - '{"f1": "v1_upgraded", "f2": 10}'
-          - '{"index": {"_index": "test_index", "_type": "test_type"}}'
+          - '{"index": {"_index": "test_index", "_type": "doc"}}'
           - '{"f1": "v2_upgraded", "f2": 11}'
-          - '{"index": {"_index": "test_index", "_type": "test_type"}}'
+          - '{"index": {"_index": "test_index", "_type": "doc"}}'
           - '{"f1": "v3_upgraded", "f2": 12}'
-          - '{"index": {"_index": "test_index", "_type": "test_type"}}'
+          - '{"index": {"_index": "test_index", "_type": "doc"}}'
           - '{"f1": "v4_upgraded", "f2": 13}'
-          - '{"index": {"_index": "test_index", "_type": "test_type"}}'
+          - '{"index": {"_index": "test_index", "_type": "doc"}}'
           - '{"f1": "v5_upgraded", "f2": 14}'
 
  - do:

test/framework/src/main/java/org/elasticsearch/transport/AbstractSimpleTransportTestCase.java

@@ -2422,7 +2422,7 @@ public abstract class AbstractSimpleTransportTestCase extends ESTestCase {
             int addressLen = serviceB.boundAddress().publishAddress().address().getAddress().getAddress().length;
             // if we are bound to a IPv6 address the response address is serialized with the exception so it will be different depending
             // on the stack. The emphemeral port will always be in the same range
-            assertEquals(185 + addressLen, stats.getRxSize().getBytes());
+            assertEquals(183 + addressLen, stats.getRxSize().getBytes());
             assertEquals(91, stats.getTxSize().getBytes());
         } finally {
             serviceC.close();

test/framework/src/test/java/org/elasticsearch/test/VersionUtilsTests.java

@@ -23,13 +23,19 @@ import org.elasticsearch.common.collect.Tuple;
 
 import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.LinkedHashSet;
 import java.util.List;
 
 import static java.util.Collections.singletonList;
+import static java.util.stream.Collectors.toCollection;
 import static java.util.stream.Collectors.toList;
 import static org.hamcrest.Matchers.greaterThanOrEqualTo;
 import static org.hamcrest.Matchers.lessThanOrEqualTo;
 
+/**
+ * Tests VersionUtils. Note: this test should remain unchanged across major versions
+ * it uses the hardcoded versions on purpose.
+ */
 public class VersionUtilsTests extends ESTestCase {
 
     public void testAllVersionsSorted() {
@@ -174,37 +180,29 @@ public class VersionUtilsTests extends ESTestCase {
     public void testGradleVersionsMatchVersionUtils() {
         // First check the index compatible versions
         VersionsFromProperty indexCompatible = new VersionsFromProperty("tests.gradle_index_compat_versions");
-
         List<Version> released = VersionUtils.allReleasedVersions().stream()
                 /* We skip alphas, betas, and the like in gradle because they don't have
                  * backwards compatibility guarantees even though they are technically
                  * released. */
-                .filter(Version::isRelease)
+                .filter(v -> v.isRelease() && (v.major == Version.CURRENT.major || v.major == Version.CURRENT.major - 1))
                 .collect(toList());
         List<String> releasedIndexCompatible = released.stream()
                 .map(Object::toString)
                 .collect(toList());
         assertEquals(releasedIndexCompatible, indexCompatible.released);
 
-        List<String> unreleasedIndexCompatible = VersionUtils.allUnreleasedVersions().stream()
+        List<String> unreleasedIndexCompatible = new ArrayList<>(VersionUtils.allUnreleasedVersions().stream()
                 /* Gradle skips the current version because being backwards compatible
                  * with yourself is implied. Java lists the version because it is useful. */
                 .filter(v -> v != Version.CURRENT)
-                .map(Object::toString)
+                .map(v -> v.major + "." + v.minor + "." + v.revision)
-                .collect(toList());
+                .collect(toCollection(LinkedHashSet::new)));
         assertEquals(unreleasedIndexCompatible, indexCompatible.unreleased);
 
         // Now the wire compatible versions
         VersionsFromProperty wireCompatible = new VersionsFromProperty("tests.gradle_wire_compat_versions");
 
-        // Big horrible hack:
+        Version minimumCompatibleVersion = Version.CURRENT.minimumCompatibilityVersion();
-        // This *should* be:
-        //         Version minimumCompatibleVersion = Version.CURRENT.minimumCompatibilityVersion();
-        // But instead it is:
-        Version minimumCompatibleVersion = Version.V_5_6_0;
-        // Because things blow up all over the place if the minimum compatible version isn't released.
-        // We'll fix this very, very soon. But for now, this hack.
-        // end big horrible hack
         List<String> releasedWireCompatible = released.stream()
                 .filter(v -> v.onOrAfter(minimumCompatibleVersion))
                 .map(Object::toString)