private void applyCleanedIndices(final ClusterChangedEvent event) {
// handle closed indices, since they are not allocated on a node once they are closed
// so applyDeletedIndices might not take them into account
for (IndexService indexService : indicesService) {
String index = indexService.index().getName();
IndexMetaData indexMetaData = event.state().metaData().index(index);
if (indexMetaData != null && indexMetaData.state() == IndexMetaData.State.CLOSE) {
for (Integer shardId : indexService.shardIds()) {
logger.debug("[{}][{}] removing shard (index is closed)", index, shardId);
try {
indexService.removeShard(shardId, "removing shard (index is closed)");
} catch (Throwable e) {
logger.warn("[{}] failed to remove shard (index is closed)", e, index);
}
}
}
}
for (IndexService indexService : indicesService) {
String index = indexService.index().getName();
if (indexService.shardIds().isEmpty()) {
if (logger.isDebugEnabled()) {
logger.debug("[{}] cleaning index (no shards allocated)", index);
}
// clean the index
removeIndex(index, "removing index (no shards allocated)");
}
}
}
private void applyDeletedShards(final ClusterChangedEvent event) {
RoutingNodes.RoutingNodeIterator routingNode =
event.state().readOnlyRoutingNodes().routingNodeIter(event.state().nodes().localNodeId());
if (routingNode == null) {
return;
}
IntHashSet newShardIds = new IntHashSet();
for (IndexService indexService : indicesService) {
String index = indexService.index().name();
IndexMetaData indexMetaData = event.state().metaData().index(index);
if (indexMetaData == null) {
continue;
}
// now, go over and delete shards that needs to get deleted
newShardIds.clear();
for (ShardRouting shard : routingNode) {
if (shard.index().equals(index)) {
newShardIds.add(shard.id());
}
}
for (Integer existingShardId : indexService.shardIds()) {
if (!newShardIds.contains(existingShardId)) {
if (indexMetaData.state() == IndexMetaData.State.CLOSE) {
if (logger.isDebugEnabled()) {
logger.debug("[{}][{}] removing shard (index is closed)", index, existingShardId);
}
indexService.removeShard(existingShardId, "removing shard (index is closed)");
} else {
// we can just remove the shard, without cleaning it locally, since we will clean it
// when all shards are allocated in the IndicesStore
if (logger.isDebugEnabled()) {
logger.debug("[{}][{}] removing shard (not allocated)", index, existingShardId);
}
indexService.removeShard(existingShardId, "removing shard (not allocated)");
}
}
}
}
}
public synchronized void close(final String reason, boolean delete) throws IOException {
if (closed.compareAndSet(false, true)) {
deleted.compareAndSet(false, delete);
try {
final Set<Integer> shardIds = shardIds();
for (final int shardId : shardIds) {
try {
removeShard(shardId, reason);
} catch (Exception e) {
logger.warn("failed to close shard", e);
}
}
} finally {
IOUtils.close(
bitsetFilterCache, indexCache, indexFieldData, analysisService, refreshTask, fsyncTask);
}
}
}
@Override
public void clusterChanged(final ClusterChangedEvent event) {
if (!indicesService.changesAllowed()) {
return;
}
if (!lifecycle.started()) {
return;
}
synchronized (mutex) {
// we need to clean the shards and indices we have on this node, since we
// are going to recover them again once state persistence is disabled (no master / not
// recovered)
// TODO: this feels a bit hacky here, a block disables state persistence, and then we clean
// the allocated shards, maybe another flag in blocks?
if (event.state().blocks().disableStatePersistence()) {
for (IndexService indexService : indicesService) {
String index = indexService.index().getName();
for (Integer shardId : indexService.shardIds()) {
logger.debug("[{}][{}] removing shard (disabled block persistence)", index, shardId);
try {
indexService.removeShard(shardId, "removing shard (disabled block persistence)");
} catch (Throwable e) {
logger.warn("[{}] failed to remove shard (disabled block persistence)", e, index);
}
}
removeIndex(index, "cleaning index (disabled block persistence)");
}
return;
}
cleanFailedShards(event);
applyDeletedIndices(event);
applyNewIndices(event);
applyMappings(event);
applyAliases(event);
applyNewOrUpdatedShards(event);
applyDeletedShards(event);
applyCleanedIndices(event);
applySettings(event);
}
}
private void failAndRemoveShard(
ShardRouting shardRouting,
IndexService indexService,
boolean sendShardFailure,
String message,
@Nullable Throwable failure) {
if (indexService.hasShard(shardRouting.getId())) {
try {
indexService.removeShard(shardRouting.getId(), message);
} catch (ShardNotFoundException e) {
// the node got closed on us, ignore it
} catch (Throwable e1) {
logger.warn(
"[{}][{}] failed to remove shard after failure ([{}])",
e1,
shardRouting.getIndex(),
shardRouting.getId(),
message);
}
}
if (sendShardFailure) {
sendFailShard(shardRouting, indexService.indexUUID(), message, failure);
}
}
private void applyNewOrUpdatedShards(final ClusterChangedEvent event) {
if (!indicesService.changesAllowed()) {
return;
}
RoutingTable routingTable = event.state().routingTable();
RoutingNodes.RoutingNodeIterator routingNode =
event.state().readOnlyRoutingNodes().routingNodeIter(event.state().nodes().localNodeId());
if (routingNode == null) {
failedShards.clear();
return;
}
DiscoveryNodes nodes = event.state().nodes();
for (final ShardRouting shardRouting : routingNode) {
final IndexService indexService = indicesService.indexService(shardRouting.index());
if (indexService == null) {
// got deleted on us, ignore
continue;
}
final IndexMetaData indexMetaData = event.state().metaData().index(shardRouting.index());
if (indexMetaData == null) {
// the index got deleted on the metadata, we will clean it later in the apply deleted method
// call
continue;
}
final int shardId = shardRouting.id();
if (!indexService.hasShard(shardId) && shardRouting.started()) {
if (failedShards.containsKey(shardRouting.shardId())) {
if (nodes.masterNode() != null) {
shardStateAction.resendShardFailed(
shardRouting,
indexMetaData.getIndexUUID(),
"master "
+ nodes.masterNode()
+ " marked shard as started, but shard has previous failed. resending shard failure.",
nodes.masterNode());
}
} else {
// the master thinks we are started, but we don't have this shard at all, mark it as
// failed
sendFailShard(
shardRouting,
indexMetaData.getIndexUUID(),
"master ["
+ nodes.masterNode()
+ "] marked shard as started, but shard has not been created, mark shard as failed",
null);
}
continue;
}
IndexShard indexShard = indexService.shard(shardId);
if (indexShard != null) {
ShardRouting currentRoutingEntry = indexShard.routingEntry();
// if the current and global routing are initializing, but are still not the same, its a
// different "shard" being allocated
// for example: a shard that recovers from one node and now needs to recover to another
// node,
// or a replica allocated and then allocating a primary because the primary
// failed on another node
boolean shardHasBeenRemoved = false;
if (currentRoutingEntry.initializing()
&& shardRouting.initializing()
&& !currentRoutingEntry.equals(shardRouting)) {
logger.debug(
"[{}][{}] removing shard (different instance of it allocated on this node, current [{}], global [{}])",
shardRouting.index(),
shardRouting.id(),
currentRoutingEntry,
shardRouting);
// closing the shard will also cancel any ongoing recovery.
indexService.removeShard(
shardRouting.id(),
"removing shard (different instance of it allocated on this node)");
shardHasBeenRemoved = true;
} else if (isPeerRecovery(shardRouting)) {
final DiscoveryNode sourceNode =
findSourceNodeForPeerRecovery(routingTable, nodes, shardRouting);
// check if there is an existing recovery going, and if so, and the source node is not the
// same, cancel the recovery to restart it
final Predicate<RecoveryStatus> shouldCancel =
new Predicate<RecoveryStatus>() {
@Override
public boolean apply(@Nullable RecoveryStatus status) {
return status.sourceNode().equals(sourceNode) == false;
}
};
if (recoveryTarget.cancelRecoveriesForShard(
indexShard.shardId(), "recovery source node changed", shouldCancel)) {
logger.debug(
"[{}][{}] removing shard (recovery source changed), current [{}], global [{}])",
shardRouting.index(),
shardRouting.id(),
currentRoutingEntry,
shardRouting);
// closing the shard will also cancel any ongoing recovery.
indexService.removeShard(
shardRouting.id(), "removing shard (recovery source node changed)");
shardHasBeenRemoved = true;
}
}
if (shardHasBeenRemoved == false
&& (shardRouting.equals(indexShard.routingEntry()) == false
|| shardRouting.version() > indexShard.routingEntry().version())) {
if (shardRouting.primary()
&& indexShard.routingEntry().primary() == false
&& shardRouting.initializing()
&& indexShard.allowsPrimaryPromotion() == false) {
logger.debug("{} reinitialize shard on primary promotion", indexShard.shardId());
indexService.removeShard(shardId, "promoted to primary");
} else {
// if we happen to remove the shardRouting by id above we don't need to jump in here!
indexShard.updateRoutingEntry(
shardRouting, event.state().blocks().disableStatePersistence() == false);
}
}
}
if (shardRouting.initializing()) {
applyInitializingShard(event.state(), indexMetaData, shardRouting);
}
}
}
