mirror of https://github.com/apache/lucene.git
SOLR-4693: A "deleteshard" collections API that unloads all replicas of a given shard and then removes it from the cluster state. It will remove only those shards which are INACTIVE or have no range (created for custom sharding).
git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1499655 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Shalin Shekhar Mangar
parent
969c50b403
commit
dcbc79ce15
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@ -151,6 +151,11 @@ New Features
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* SOLR-4977: Add option to send IndexWriter's infostream to the logging system.
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(Ryan Ernst via Robert Muir)
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* SOLR-4693: A "deleteshard" collections API that unloads all replicas of a given
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shard and then removes it from the cluster state. It will remove only those shards
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which are INACTIVE or have no range (created for custom sharding).
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(Anshum Gupta, shalin)
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Bug Fixes
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----------------------
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@ -52,6 +52,7 @@ public class Overseer {
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public static final String QUEUE_OPERATION = "operation";
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public static final String DELETECORE = "deletecore";
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public static final String REMOVECOLLECTION = "removecollection";
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public static final String REMOVESHARD = "removeshard";
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private static final int STATE_UPDATE_DELAY = 1500; // delay between cloud state updates
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@ -181,6 +182,8 @@ public class Overseer {
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clusterState = removeCore(clusterState, message);
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} else if (REMOVECOLLECTION.equals(operation)) {
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clusterState = removeCollection(clusterState, message);
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} else if (REMOVESHARD.equals(operation)) {
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clusterState = removeShard(clusterState, message);
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} else if (ZkStateReader.LEADER_PROP.equals(operation)) {
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StringBuilder sb = new StringBuilder();
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@ -549,6 +552,26 @@ public class Overseer {
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return newState;
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}
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/*
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* Remove collection slice from cloudstate
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*/
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private ClusterState removeShard(final ClusterState clusterState, ZkNodeProps message) {
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final String collection = message.getStr(ZkStateReader.COLLECTION_PROP);
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final String sliceId = message.getStr(ZkStateReader.SHARD_ID_PROP);
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final Map<String, DocCollection> newCollections = new LinkedHashMap<String,DocCollection>(clusterState.getCollectionStates()); // shallow copy
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DocCollection coll = newCollections.get(collection);
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Map<String, Slice> newSlices = new LinkedHashMap<String, Slice>(coll.getSlicesMap());
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newSlices.remove(sliceId);
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DocCollection newCollection = new DocCollection(coll.getName(), newSlices, coll.getProperties(), coll.getRouter());
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newCollections.put(newCollection.getName(), newCollection);
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return new ClusterState(clusterState.getLiveNodes(), newCollections);
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}
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/*
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* Remove core from cloudstate
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*/
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@ -75,6 +75,8 @@ public class OverseerCollectionProcessor implements Runnable, ClosableThread {
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public static final String SPLITSHARD = "splitshard";
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public static final String DELETESHARD = "deleteshard";
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// TODO: use from Overseer?
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private static final String QUEUE_OPERATION = "operation";
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@ -164,6 +166,38 @@ public class OverseerCollectionProcessor implements Runnable, ClosableThread {
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if (CREATECOLLECTION.equals(operation)) {
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createCollection(zkStateReader.getClusterState(), message, results);
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} else if (DELETECOLLECTION.equals(operation)) {
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deleteCollection(message, results);
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} else if (RELOADCOLLECTION.equals(operation)) {
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ModifiableSolrParams params = new ModifiableSolrParams();
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params.set(CoreAdminParams.ACTION, CoreAdminAction.RELOAD.toString());
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collectionCmd(zkStateReader.getClusterState(), message, params, results, ZkStateReader.ACTIVE);
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} else if (CREATEALIAS.equals(operation)) {
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createAlias(zkStateReader.getAliases(), message);
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} else if (DELETEALIAS.equals(operation)) {
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deleteAlias(zkStateReader.getAliases(), message);
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} else if (SPLITSHARD.equals(operation)) {
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splitShard(zkStateReader.getClusterState(), message, results);
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} else if (DELETESHARD.equals(operation)) {
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deleteShard(zkStateReader.getClusterState(), message, results);
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} else {
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throw new SolrException(ErrorCode.BAD_REQUEST, "Unknown operation:"
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+ operation);
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}
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} catch (Throwable t) {
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SolrException.log(log, "Collection " + operation + " of " + operation
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+ " failed", t);
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results.add("Operation " + operation + " caused exception:", t);
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SimpleOrderedMap nl = new SimpleOrderedMap();
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nl.add("msg", t.getMessage());
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nl.add("rspCode", t instanceof SolrException ? ((SolrException)t).code() : -1);
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results.add("exception", nl);
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}
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return new OverseerSolrResponse(results);
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}
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private void deleteCollection(ZkNodeProps message, NamedList results) throws KeeperException, InterruptedException {
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ModifiableSolrParams params = new ModifiableSolrParams();
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params.set(CoreAdminParams.ACTION, CoreAdminAction.UNLOAD.toString());
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params.set(CoreAdminParams.DELETE_INSTANCE_DIR, true);
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@ -189,32 +223,6 @@ public class OverseerCollectionProcessor implements Runnable, ClosableThread {
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if (!removed) {
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throw new SolrException(ErrorCode.SERVER_ERROR, "Could not fully remove collection: " + message.getStr("name"));
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}
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} else if (RELOADCOLLECTION.equals(operation)) {
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ModifiableSolrParams params = new ModifiableSolrParams();
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params.set(CoreAdminParams.ACTION, CoreAdminAction.RELOAD.toString());
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collectionCmd(zkStateReader.getClusterState(), message, params, results, ZkStateReader.ACTIVE);
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} else if (CREATEALIAS.equals(operation)) {
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createAlias(zkStateReader.getAliases(), message);
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} else if (DELETEALIAS.equals(operation)) {
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deleteAlias(zkStateReader.getAliases(), message);
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} else if (SPLITSHARD.equals(operation)) {
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splitShard(zkStateReader.getClusterState(), message, results);
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} else {
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throw new SolrException(ErrorCode.BAD_REQUEST, "Unknown operation:"
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+ operation);
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}
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} catch (Throwable t) {
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SolrException.log(log, "Collection " + operation + " of " + operation
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+ " failed", t);
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results.add("Operation " + operation + " caused exception:", t);
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SimpleOrderedMap nl = new SimpleOrderedMap();
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nl.add("msg", t.getMessage());
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nl.add("rspCode", t instanceof SolrException ? ((SolrException)t).code() : -1);
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results.add("exception", nl);
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}
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return new OverseerSolrResponse(results);
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}
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private void createAlias(Aliases aliases, ZkNodeProps message) {
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@ -604,6 +612,75 @@ public class OverseerCollectionProcessor implements Runnable, ClosableThread {
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} while (srsp != null);
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}
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private void deleteShard(ClusterState clusterState, ZkNodeProps message, NamedList results) {
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log.info("Delete shard invoked");
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String collection = message.getStr(ZkStateReader.COLLECTION_PROP);
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String sliceId = message.getStr(ZkStateReader.SHARD_ID_PROP);
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Slice slice = clusterState.getSlice(collection, sliceId);
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if (slice == null) {
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if(clusterState.getCollections().contains(collection)) {
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throw new SolrException(ErrorCode.BAD_REQUEST,
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"No shard with the specified name exists: " + slice);
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} else {
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throw new SolrException(ErrorCode.BAD_REQUEST,
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"No collection with the specified name exists: " + collection);
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}
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}
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// For now, only allow for deletions of Inactive slices or custom hashes (range==null).
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// TODO: Add check for range gaps on Slice deletion
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if (!(slice.getRange() == null || slice.getState().equals(Slice.INACTIVE))) {
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throw new SolrException(ErrorCode.BAD_REQUEST,
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"The slice: " + slice.getName() + " is currently "
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+ slice.getState() + ". Only INACTIVE (or custom-hashed) slices can be deleted.");
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}
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try {
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ModifiableSolrParams params = new ModifiableSolrParams();
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params.set(CoreAdminParams.ACTION, CoreAdminAction.UNLOAD.toString());
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params.set(CoreAdminParams.DELETE_INDEX, "true");
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sliceCmd(clusterState, params, null, slice);
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ShardResponse srsp;
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do {
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srsp = shardHandler.takeCompletedOrError();
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if (srsp != null) {
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processResponse(results, srsp);
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}
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} while (srsp != null);
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ZkNodeProps m = new ZkNodeProps(Overseer.QUEUE_OPERATION,
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Overseer.REMOVESHARD, ZkStateReader.COLLECTION_PROP, collection);
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Overseer.getInQueue(zkStateReader.getZkClient()).offer(ZkStateReader.toJSON(m));
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// wait for a while until we don't see the shard
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long now = System.currentTimeMillis();
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long timeout = now + 30000;
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boolean removed = false;
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while (System.currentTimeMillis() < timeout) {
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Thread.sleep(100);
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removed = zkStateReader.getClusterState().getSlice(collection, message.getStr("name")) == null;
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if (removed) {
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Thread.sleep(100); // just a bit of time so it's more likely other readers see on return
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break;
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}
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}
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if (!removed) {
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throw new SolrException(ErrorCode.SERVER_ERROR,
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"Could not fully remove collection: " + collection + " shard: " + message.getStr("name"));
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}
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log.info("Successfully deleted collection " + collection + ", shard: " + message.getStr("name"));
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} catch (SolrException e) {
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throw e;
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} catch (Exception e) {
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throw new SolrException(ErrorCode.SERVER_ERROR, "Error executing delete operation for collection: " + collection + " shard: " + message.getStr("name"), e);
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}
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}
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private void sendShardRequest(String nodeName, ModifiableSolrParams params) {
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ShardRequest sreq = new ShardRequest();
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params.set("qt", adminPath);
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@ -756,6 +833,20 @@ public class OverseerCollectionProcessor implements Runnable, ClosableThread {
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for (Map.Entry<String,Slice> entry : coll.getSlicesMap().entrySet()) {
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Slice slice = entry.getValue();
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sliceCmd(clusterState, params, stateMatcher, slice);
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}
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ShardResponse srsp;
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do {
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srsp = shardHandler.takeCompletedOrError();
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if (srsp != null) {
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processResponse(results, srsp);
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}
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} while (srsp != null);
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}
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private void sliceCmd(ClusterState clusterState, ModifiableSolrParams params, String stateMatcher, Slice slice) {
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Map<String,Replica> shards = slice.getReplicasMap();
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Set<Map.Entry<String,Replica>> shardEntries = shards.entrySet();
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for (Map.Entry<String,Replica> shardEntry : shardEntries) {
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@ -785,16 +876,6 @@ public class OverseerCollectionProcessor implements Runnable, ClosableThread {
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}
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}
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ShardResponse srsp;
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do {
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srsp = shardHandler.takeCompletedOrError();
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if (srsp != null) {
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processResponse(results, srsp);
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}
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} while (srsp != null);
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}
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private void processResponse(NamedList results, ShardResponse srsp) {
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Throwable e = srsp.getException();
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if (e != null) {
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@ -136,6 +136,10 @@ public class CollectionsHandler extends RequestHandlerBase {
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this.handleSplitShardAction(req, rsp);
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break;
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}
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case DELETESHARD: {
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this.handleDeleteShardAction(req, rsp);
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break;
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}
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default: {
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throw new RuntimeException("Unknown action: " + action);
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@ -149,10 +153,15 @@ public class CollectionsHandler extends RequestHandlerBase {
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private void handleResponse(String operation, ZkNodeProps m,
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SolrQueryResponse rsp) throws KeeperException, InterruptedException {
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handleResponse(operation, m, rsp, DEFAULT_ZK_TIMEOUT);
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}
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private void handleResponse(String operation, ZkNodeProps m,
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SolrQueryResponse rsp, long timeout) throws KeeperException, InterruptedException {
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long time = System.currentTimeMillis();
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QueueEvent event = coreContainer.getZkController()
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.getOverseerCollectionQueue()
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.offer(ZkStateReader.toJSON(m), DEFAULT_ZK_TIMEOUT);
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.offer(ZkStateReader.toJSON(m), timeout);
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if (event.getBytes() != null) {
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SolrResponse response = SolrResponse.deserialize(event.getBytes());
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rsp.getValues().addAll(response.getResponse());
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@ -162,9 +171,9 @@ public class CollectionsHandler extends RequestHandlerBase {
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rsp.setException(new SolrException(code != null && code != -1 ? ErrorCode.getErrorCode(code) : ErrorCode.SERVER_ERROR, (String)exp.get("msg")));
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}
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} else {
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if (System.currentTimeMillis() - time >= DEFAULT_ZK_TIMEOUT) {
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if (System.currentTimeMillis() - time >= timeout) {
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throw new SolrException(ErrorCode.SERVER_ERROR, operation
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+ " the collection time out:" + DEFAULT_ZK_TIMEOUT / 1000 + "s");
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+ " the collection time out:" + timeout / 1000 + "s");
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} else if (event.getWatchedEvent() != null) {
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throw new SolrException(ErrorCode.SERVER_ERROR, operation
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+ " the collection error [Watcher fired on path: "
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@ -281,6 +290,21 @@ public class CollectionsHandler extends RequestHandlerBase {
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handleResponse(OverseerCollectionProcessor.CREATECOLLECTION, m, rsp);
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}
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private void handleDeleteShardAction(SolrQueryRequest req,
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SolrQueryResponse rsp) throws InterruptedException, KeeperException {
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log.info("Deleting Shard : " + req.getParamString());
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String name = req.getParams().required().get("collection");
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String shard = req.getParams().required().get("shard");
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Map<String,Object> props = new HashMap<String,Object>();
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props.put("collection", name);
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props.put(Overseer.QUEUE_OPERATION, OverseerCollectionProcessor.DELETESHARD);
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props.put(ZkStateReader.SHARD_ID_PROP, shard);
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ZkNodeProps m = new ZkNodeProps(props);
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handleResponse(OverseerCollectionProcessor.DELETESHARD, m, rsp);
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}
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private void handleSplitShardAction(SolrQueryRequest req, SolrQueryResponse rsp) throws KeeperException, InterruptedException {
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log.info("Splitting shard : " + req.getParamString());
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String name = req.getParams().required().get("collection");
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@ -295,10 +319,7 @@ public class CollectionsHandler extends RequestHandlerBase {
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ZkNodeProps m = new ZkNodeProps(props);
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// todo remove this hack
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DEFAULT_ZK_TIMEOUT *= 5;
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handleResponse(OverseerCollectionProcessor.SPLITSHARD, m, rsp);
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DEFAULT_ZK_TIMEOUT /= 5;
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handleResponse(OverseerCollectionProcessor.SPLITSHARD, m, rsp, DEFAULT_ZK_TIMEOUT * 5);
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}
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public static ModifiableSolrParams params(String... params) {
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@ -0,0 +1,174 @@
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package org.apache.solr.cloud;
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/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
|
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
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* See the License for the specific language governing permissions and
|
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* limitations under the License.
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*/
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import org.apache.solr.client.solrj.SolrRequest;
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import org.apache.solr.client.solrj.SolrServerException;
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import org.apache.solr.client.solrj.impl.HttpSolrServer;
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import org.apache.solr.client.solrj.request.QueryRequest;
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import org.apache.solr.common.SolrException;
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import org.apache.solr.common.cloud.ClusterState;
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import org.apache.solr.common.cloud.Slice;
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import org.apache.solr.common.cloud.ZkNodeProps;
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import org.apache.solr.common.cloud.ZkStateReader;
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import org.apache.solr.common.params.CollectionParams;
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import org.apache.solr.common.params.ModifiableSolrParams;
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import org.apache.solr.handler.admin.CollectionsHandler;
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import org.apache.zookeeper.KeeperException;
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import org.junit.After;
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import org.junit.Before;
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import java.io.IOException;
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import java.util.HashMap;
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import java.util.Map;
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public class DeleteShardTest extends AbstractFullDistribZkTestBase {
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public DeleteShardTest() {
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super();
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fixShardCount = true;
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shardCount = 2;
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sliceCount = 2;
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}
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@Override
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@Before
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public void setUp() throws Exception {
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super.setUp();
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System.setProperty("numShards", "2");
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System.setProperty("solr.xml.persist", "true");
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}
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@Override
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@After
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public void tearDown() throws Exception {
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super.tearDown();
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if (VERBOSE || printLayoutOnTearDown) {
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super.printLayout();
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}
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if (controlClient != null) {
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controlClient.shutdown();
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}
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if (cloudClient != null) {
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cloudClient.shutdown();
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}
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if (controlClientCloud != null) {
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controlClientCloud.shutdown();
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}
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super.tearDown();
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System.clearProperty("numShards");
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System.clearProperty("solr.xml.persist");
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}
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// TODO: Custom hash slice deletion test
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@Override
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public void doTest() throws Exception {
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ClusterState clusterState = cloudClient.getZkStateReader().getClusterState();
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Slice slice1 = clusterState.getSlice(AbstractDistribZkTestBase.DEFAULT_COLLECTION, SHARD1);
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Slice slice2 = clusterState.getSlice(AbstractDistribZkTestBase.DEFAULT_COLLECTION, SHARD2);
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assertNotNull("Shard1 not found", slice1);
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assertNotNull("Shard2 not found", slice2);
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assertEquals("Shard1 is not active", Slice.ACTIVE, slice1.getState());
|
||||
assertEquals("Shard2 is not active", Slice.ACTIVE, slice2.getState());
|
||||
|
||||
setSliceAsInactive(SHARD1);
|
||||
|
||||
clusterState = cloudClient.getZkStateReader().getClusterState();
|
||||
|
||||
slice1 = clusterState.getSlice(AbstractDistribZkTestBase.DEFAULT_COLLECTION, SHARD1);
|
||||
|
||||
assertEquals("Shard1 is not inactive yet.", Slice.INACTIVE, slice1.getState());
|
||||
|
||||
deleteShard(SHARD1);
|
||||
|
||||
confirmShardDeletion();
|
||||
}
|
||||
|
||||
protected void confirmShardDeletion() throws SolrServerException, KeeperException,
|
||||
InterruptedException {
|
||||
ZkStateReader zkStateReader = cloudClient.getZkStateReader();
|
||||
ClusterState clusterState = null;
|
||||
int counter = 10;
|
||||
while (counter-- > 0) {
|
||||
zkStateReader.updateClusterState(true);
|
||||
clusterState = zkStateReader.getClusterState();
|
||||
if (clusterState.getSlice("collection1", SHARD1) == null) {
|
||||
break;
|
||||
}
|
||||
Thread.sleep(1000);
|
||||
}
|
||||
|
||||
assertNull("Cluster still contains shard1 even after waiting for it to be deleted.",
|
||||
clusterState.getSlice(AbstractDistribZkTestBase.DEFAULT_COLLECTION, SHARD1));
|
||||
}
|
||||
|
||||
protected void deleteShard(String shard) throws SolrServerException, IOException,
|
||||
KeeperException, InterruptedException {
|
||||
|
||||
ModifiableSolrParams params = new ModifiableSolrParams();
|
||||
params.set("action", CollectionParams.CollectionAction.DELETESHARD.toString());
|
||||
params.set("collection", AbstractFullDistribZkTestBase.DEFAULT_COLLECTION);
|
||||
params.set("shard", shard);
|
||||
SolrRequest request = new QueryRequest(params);
|
||||
request.setPath("/admin/collections");
|
||||
|
||||
String baseUrl = ((HttpSolrServer) shardToJetty.get(SHARD1).get(0).client.solrClient)
|
||||
.getBaseURL();
|
||||
baseUrl = baseUrl.substring(0, baseUrl.length() - "collection1".length());
|
||||
|
||||
HttpSolrServer baseServer = new HttpSolrServer(baseUrl);
|
||||
baseServer.setConnectionTimeout(15000);
|
||||
baseServer.setSoTimeout((int) (CollectionsHandler.DEFAULT_ZK_TIMEOUT));
|
||||
baseServer.request(request);
|
||||
}
|
||||
|
||||
protected void setSliceAsInactive(String slice) throws SolrServerException, IOException,
|
||||
KeeperException, InterruptedException {
|
||||
DistributedQueue inQueue = Overseer.getInQueue(cloudClient.getZkStateReader().getZkClient());
|
||||
Map<String, Object> propMap = new HashMap<String, Object>();
|
||||
propMap.put(Overseer.QUEUE_OPERATION, "updateshardstate");
|
||||
propMap.put(slice, Slice.INACTIVE);
|
||||
propMap.put(ZkStateReader.COLLECTION_PROP, "collection1");
|
||||
ZkNodeProps m = new ZkNodeProps(propMap);
|
||||
ZkStateReader zkStateReader = cloudClient.getZkStateReader();
|
||||
inQueue.offer(ZkStateReader.toJSON(m));
|
||||
boolean transition = false;
|
||||
|
||||
for (int counter = 10; counter > 0; counter--) {
|
||||
zkStateReader.updateClusterState(true);
|
||||
ClusterState clusterState = zkStateReader.getClusterState();
|
||||
String sliceState = clusterState.getSlice("collection1", slice).getState();
|
||||
if (sliceState.equals(Slice.INACTIVE)) {
|
||||
transition = true;
|
||||
break;
|
||||
}
|
||||
Thread.sleep(1000);
|
||||
}
|
||||
|
||||
if (!transition) {
|
||||
throw new SolrException(SolrException.ErrorCode.SERVER_ERROR, "Could not set shard [" + slice + "] as INACTIVE");
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
|
|
@ -28,7 +28,7 @@ public interface CollectionParams
|
|||
|
||||
|
||||
public enum CollectionAction {
|
||||
CREATE, DELETE, RELOAD, SYNCSHARD, CREATEALIAS, DELETEALIAS, SPLITSHARD;
|
||||
CREATE, DELETE, RELOAD, SYNCSHARD, CREATEALIAS, DELETEALIAS, SPLITSHARD, DELETESHARD;
|
||||
|
||||
public static CollectionAction get( String p )
|
||||
{
|
||||
|
|
|
|||
Loading…
Reference in New Issue