Package org.elasticsearch.cluster.routing

Examples of org.elasticsearch.cluster.routing.ShardRouting

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            }
            perform(e);
        }

        private void perform(@Nullable final Exception lastException) {
            final ShardRouting shardRouting = shardIt.nextOrNull();
            if (shardRouting == null) {
                Exception failure = lastException;
                if (failure == null) {
                    failure = new NoShardAvailableActionException(shardIt.shardId(), "No shard available for [" + request + "]");
                } else {
                    if (logger.isDebugEnabled()) {
                        logger.debug(shardIt.shardId() + ": Failed to execute [{}]", failure, request);
                    }
                }
                listener.onFailure(failure);
                return;
            }

            if (shardRouting.currentNodeId().equals(nodes.localNodeId())) {
                if (request.operationThreaded()) {
                    threadPool.executor(executor).execute(new Runnable() {
                        @Override public void run() {
                            try {
                                Response response = shardOperation(request, shardRouting.id());
                                listener.onResponse(response);
                            } catch (Exception e) {
                                onFailure(shardRouting, e);
                            }
                        }
                    });
                } else {
                    try {
                        final Response response = shardOperation(request, shardRouting.id());
                        listener.onResponse(response);
                    } catch (Exception e) {
                        onFailure(shardRouting, e);
                    }
                }
            } else {
                DiscoveryNode node = nodes.get(shardRouting.currentNodeId());
                transportService.sendRequest(node, transportShardAction, new ShardSingleOperationRequest(request, shardRouting.id()), new BaseTransportResponseHandler<Response>() {

                    @Override public Response newInstance() {
                        return newResponse();
                    }
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        assertThat(shardIterator.size(), equalTo(3));
        assertThat(shardIterator.firstOrNull(), notNullValue());
        assertThat(shardIterator.remaining(), equalTo(3));
        assertThat(shardIterator.firstOrNull(), sameInstance(shardIterator.firstOrNull()));
        assertThat(shardIterator.remaining(), equalTo(3));
        ShardRouting shardRouting1 = shardIterator.nextOrNull();
        assertThat(shardRouting1, notNullValue());
        assertThat(shardIterator.remaining(), equalTo(2));
        ShardRouting shardRouting2 = shardIterator.nextOrNull();
        assertThat(shardRouting2, notNullValue());
        assertThat(shardIterator.remaining(), equalTo(1));
        assertThat(shardRouting2, not(sameInstance(shardRouting1)));
        ShardRouting shardRouting3 = shardIterator.nextOrNull();
        assertThat(shardRouting3, notNullValue());
        assertThat(shardRouting3, not(sameInstance(shardRouting1)));
        assertThat(shardRouting3, not(sameInstance(shardRouting2)));
        assertThat(shardIterator.nextOrNull(), nullValue());
        assertThat(shardIterator.remaining(), equalTo(0));
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        assertThat(shardIterator.size(), equalTo(2));
        assertThat(shardIterator.firstOrNull(), notNullValue());
        assertThat(shardIterator.remaining(), equalTo(2));
        assertThat(shardIterator.firstOrNull(), sameInstance(shardIterator.firstOrNull()));
        assertThat(shardIterator.remaining(), equalTo(2));
        ShardRouting shardRouting1 = shardIterator.nextOrNull();
        assertThat(shardRouting1, notNullValue());
        assertThat(shardIterator.remaining(), equalTo(1));
        ShardRouting shardRouting2 = shardIterator.nextOrNull();
        assertThat(shardRouting2, notNullValue());
        assertThat(shardIterator.remaining(), equalTo(0));
        assertThat(shardRouting2, not(sameInstance(shardRouting1)));
        assertThat(shardIterator.nextOrNull(), nullValue());
        assertThat(shardIterator.remaining(), equalTo(0));
        assertThat(shardIterator.nextOrNull(), nullValue());
        assertThat(shardIterator.remaining(), equalTo(0));

        shardIterator = routingTable.index("test1").shard(0).shardsIt(1);
        assertThat(shardIterator.size(), equalTo(2));
        assertThat(shardIterator.firstOrNull(), notNullValue());
        assertThat(shardIterator.firstOrNull(), sameInstance(shardIterator.firstOrNull()));
        ShardRouting shardRouting3 = shardIterator.nextOrNull();
        assertThat(shardRouting1, notNullValue());
        ShardRouting shardRouting4 = shardIterator.nextOrNull();
        assertThat(shardRouting2, notNullValue());
        assertThat(shardRouting2, not(sameInstance(shardRouting1)));
        assertThat(shardIterator.nextOrNull(), nullValue());
        assertThat(shardIterator.nextOrNull(), nullValue());

        assertThat(shardRouting1, not(sameInstance(shardRouting3)));
        assertThat(shardRouting2, not(sameInstance(shardRouting4)));
        assertThat(shardRouting1, sameInstance(shardRouting4));
        assertThat(shardRouting2, sameInstance(shardRouting3));

        shardIterator = routingTable.index("test1").shard(0).shardsIt(2);
        assertThat(shardIterator.size(), equalTo(2));
        assertThat(shardIterator.firstOrNull(), notNullValue());
        assertThat(shardIterator.firstOrNull(), sameInstance(shardIterator.firstOrNull()));
        ShardRouting shardRouting5 = shardIterator.nextOrNull();
        assertThat(shardRouting5, notNullValue());
        ShardRouting shardRouting6 = shardIterator.nextOrNull();
        assertThat(shardRouting6, notNullValue());
        assertThat(shardRouting6, not(sameInstance(shardRouting5)));
        assertThat(shardIterator.nextOrNull(), nullValue());
        assertThat(shardIterator.nextOrNull(), nullValue());

        assertThat(shardRouting5, sameInstance(shardRouting1));
        assertThat(shardRouting6, sameInstance(shardRouting2));

        shardIterator = routingTable.index("test1").shard(0).shardsIt(3);
        assertThat(shardIterator.size(), equalTo(2));
        assertThat(shardIterator.firstOrNull(), notNullValue());
        assertThat(shardIterator.firstOrNull(), sameInstance(shardIterator.firstOrNull()));
        ShardRouting shardRouting7 = shardIterator.nextOrNull();
        assertThat(shardRouting7, notNullValue());
        ShardRouting shardRouting8 = shardIterator.nextOrNull();
        assertThat(shardRouting8, notNullValue());
        assertThat(shardRouting8, not(sameInstance(shardRouting7)));
        assertThat(shardIterator.nextOrNull(), nullValue());
        assertThat(shardIterator.nextOrNull(), nullValue());
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                .add(indexRoutingTable("test1").initializeEmpty(metaData.index("test1")))
                .add(indexRoutingTable("test2").initializeEmpty(metaData.index("test2")))
                .build();

        ShardIterator shardIterator = routingTable.index("test1").shard(0).shardsRandomIt();
        ShardRouting shardRouting1 = shardIterator.nextOrNull();
        assertThat(shardRouting1, notNullValue());
        assertThat(shardIterator.nextOrNull(), notNullValue());
        assertThat(shardIterator.nextOrNull(), nullValue());

        shardIterator = routingTable.index("test1").shard(0).shardsRandomIt();
        ShardRouting shardRouting2 = shardIterator.nextOrNull();
        assertThat(shardRouting2, notNullValue());
        ShardRouting shardRouting3 = shardIterator.nextOrNull();
        assertThat(shardRouting3, notNullValue());
        assertThat(shardIterator.nextOrNull(), nullValue());
        assertThat(shardRouting1, not(sameInstance(shardRouting2)));
        assertThat(shardRouting1, sameInstance(shardRouting3));
    }
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        }
    }

    private class FailedEngineHandler implements Engine.FailedEngineListener {
        @Override public void onFailedEngine(final ShardId shardId, final Throwable failure) {
            ShardRouting shardRouting = null;
            final IndexService indexService = indicesService.indexService(shardId.index().name());
            if (indexService != null) {
                IndexShard indexShard = indexService.shard(shardId.id());
                if (indexShard != null) {
                    shardRouting = indexShard.routingEntry();
                }
            }
            if (shardRouting == null) {
                logger.warn("[{}][{}] engine failed, but can't find index shard", shardId.index().name(), shardId.id());
                return;
            }
            final ShardRouting fShardRouting = shardRouting;
            threadPool.cached().execute(new Runnable() {
                @Override public void run() {
                    synchronized (mutex) {
                        if (indexService.hasShard(shardId.id())) {
                            try {
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            cachedShardsState.remove(shardRouting.shardId());
        }
    }

    @Override public void applyFailedShards(NodeAllocations nodeAllocations, FailedRerouteAllocation allocation) {
        ShardRouting failedShard = allocation.failedShard();
        cachedStores.remove(failedShard.shardId());
        cachedShardsState.remove(failedShard.shardId());
    }
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        IndexRoutingTable indexRoutingTable = allocation.routingTable().index(allocation.failedShard().index());
        if (indexRoutingTable == null) {
            return false;
        }

        ShardRouting failedShard = allocation.failedShard();

        boolean shardDirty = false;
        boolean inRelocation = failedShard.relocatingNodeId() != null;
        if (inRelocation) {
            RoutingNode routingNode = allocation.routingNodes().nodesToShards().get(failedShard.currentNodeId());
            if (routingNode != null) {
                Iterator<MutableShardRouting> shards = routingNode.iterator();
                while (shards.hasNext()) {
                    MutableShardRouting shard = shards.next();
                    if (shard.shardId().equals(failedShard.shardId())) {
                        shardDirty = true;
                        shard.deassignNode();
                        shards.remove();
                        break;
                    }
                }
            }
        }

        String nodeId = inRelocation ? failedShard.relocatingNodeId() : failedShard.currentNodeId();
        RoutingNode currentRoutingNode = allocation.routingNodes().nodesToShards().get(nodeId);

        if (currentRoutingNode == null) {
            // already failed (might be called several times for the same shard)
            return false;
        }

        Iterator<MutableShardRouting> shards = currentRoutingNode.iterator();
        while (shards.hasNext()) {
            MutableShardRouting shard = shards.next();
            if (shard.shardId().equals(failedShard.shardId())) {
                shardDirty = true;
                if (!inRelocation) {
                    shard.deassignNode();
                    shards.remove();
                } else {
                    shard.cancelRelocation();
                }
                break;
            }
        }

        if (!shardDirty) {
            return false;
        }

        // make sure we ignore this shard on the relevant node
        allocation.addIgnoreShardForNode(failedShard.shardId(), failedShard.currentNodeId());

        // if in relocation no need to find a new target, just cancel the relocation.
        if (inRelocation) {
            return true; // lets true, so we reroute in this case
        }

        // add the failed shard to the unassigned shards
        allocation.routingNodes().unassigned().add(new MutableShardRouting(failedShard.index(), failedShard.id(),
                null, failedShard.primary(), ShardRoutingState.UNASSIGNED, failedShard.version() + 1));

        return true;
    }
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                }

                RoutingTable routingTable = currentState.routingTable();

                for (int i = 0; i < shards.size(); i++) {
                    ShardRouting shardRouting = shards.get(i);
                    IndexRoutingTable indexRoutingTable = routingTable.index(shardRouting.index());
                    // if there is no routing table, the index has been deleted while it was being allocated
                    // which is fine, we should just ignore this
                    if (indexRoutingTable == null) {
                        shards.remove(i);
                    } else {
                        // find the one that maps to us, if its already started, no need to do anything...
                        // the shard might already be started since the nodes that is starting the shards might get cluster events
                        // with the shard still initializing, and it will try and start it again (until the verification comes)
                        IndexShardRoutingTable indexShardRoutingTable = indexRoutingTable.shard(shardRouting.id());
                        for (ShardRouting entry : indexShardRoutingTable) {
                            if (shardRouting.currentNodeId().equals(entry.currentNodeId())) {
                                // we found the same shard that exists on the same node id
                                if (entry.started()) {
                                    // already started, do nothing here...
                                    shards.remove(i);
                                }
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         * First get should try and use a shard that exists on a local node for better performance
         */
        private void performFirst() {
            if (request.preferLocalShard()) {
                boolean foundLocal = false;
                ShardRouting shardX;
                while ((shardX = shardsIt.nextOrNull()) != null) {
                    final ShardRouting shard = shardX;
                    if (shard.currentNodeId().equals(nodes.localNodeId())) {
                        foundLocal = true;
                        if (request.operationThreaded()) {
                            request.beforeLocalFork();
                            threadPool.executor(executor()).execute(new Runnable() {
                                @Override public void run() {
                                    try {
                                        Response response = shardOperation(request, shard.id());
                                        listener.onResponse(response);
                                    } catch (Exception e) {
                                        onFailure(shard, e);
                                    }
                                }
                            });
                            return;
                        } else {
                            try {
                                final Response response = shardOperation(request, shard.id());
                                listener.onResponse(response);
                                return;
                            } catch (Exception e) {
                                onFailure(shard, e);
                            }
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                perform(null);
            }
        }

        private void perform(final Exception lastException) {
            final ShardRouting shard = shardsIt.nextOrNull();
            if (shard == null) {
                Exception failure = lastException;
                if (failure == null) {
                    failure = new NoShardAvailableActionException(null, "No shard available for [" + request + "]");
                } else {
                    if (logger.isDebugEnabled()) {
                        logger.debug("failed to execute [" + request + "]", failure);
                    }
                }
                listener.onFailure(failure);
            } else {
                if (shard.currentNodeId().equals(nodes.localNodeId())) {
                    // we don't prefer local shard, so try and do it here
                    if (!request.preferLocalShard()) {
                        if (request.operationThreaded()) {
                            request.beforeLocalFork();
                            threadPool.executor(executor).execute(new Runnable() {
                                @Override public void run() {
                                    try {
                                        Response response = shardOperation(request, shard.id());
                                        listener.onResponse(response);
                                    } catch (Exception e) {
                                        onFailure(shard, e);
                                    }
                                }
                            });
                        } else {
                            try {
                                final Response response = shardOperation(request, shard.id());
                                listener.onResponse(response);
                            } catch (Exception e) {
                                onFailure(shard, e);
                            }
                        }
                    }
                } else {
                    DiscoveryNode node = nodes.get(shard.currentNodeId());
                    transportService.sendRequest(node, transportShardAction, new ShardSingleOperationRequest(request, shard.id()), new BaseTransportResponseHandler<Response>() {
                        @Override public Response newInstance() {
                            return newResponse();
                        }

                        @Override public String executor() {
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