private void applyInitializingShard(
final ClusterState state,
final IndexMetaData indexMetaData,
final ShardRouting shardRouting) {
final IndexService indexService = indicesService.indexService(shardRouting.index());
if (indexService == null) {
// got deleted on us, ignore
return;
}
final RoutingTable routingTable = state.routingTable();
final DiscoveryNodes nodes = state.getNodes();
final int shardId = shardRouting.id();
if (indexService.hasShard(shardId)) {
IndexShard indexShard = indexService.shardSafe(shardId);
if (indexShard.state() == IndexShardState.STARTED
|| indexShard.state() == IndexShardState.POST_RECOVERY) {
// the master thinks we are initializing, but we are already started or on POST_RECOVERY and
// waiting
// for master to confirm a shard started message (either master failover, or a cluster event
// before
// we managed to tell the master we started), mark us as started
if (logger.isTraceEnabled()) {
logger.trace(
"{} master marked shard as initializing, but shard has state [{}], resending shard started to {}",
indexShard.shardId(),
indexShard.state(),
nodes.masterNode());
}
if (nodes.masterNode() != null) {
shardStateAction.shardStarted(
shardRouting,
indexMetaData.getIndexUUID(),
"master "
+ nodes.masterNode()
+ " marked shard as initializing, but shard state is ["
+ indexShard.state()
+ "], mark shard as started",
nodes.masterNode());
}
return;
} else {
if (indexShard.ignoreRecoveryAttempt()) {
logger.trace(
"ignoring recovery instruction for an existing shard {} (shard state: [{}])",
indexShard.shardId(),
indexShard.state());
return;
}
}
}
// if we're in peer recovery, try to find out the source node now so in case it fails, we will
// not create the index shard
DiscoveryNode sourceNode = null;
if (isPeerRecovery(shardRouting)) {
sourceNode = findSourceNodeForPeerRecovery(routingTable, nodes, shardRouting);
if (sourceNode == null) {
logger.trace(
"ignoring initializing shard {} - no source node can be found.",
shardRouting.shardId());
return;
}
}
// if there is no shard, create it
if (!indexService.hasShard(shardId)) {
if (failedShards.containsKey(shardRouting.shardId())) {
if (nodes.masterNode() != null) {
shardStateAction.resendShardFailed(
shardRouting,
indexMetaData.getIndexUUID(),
"master "
+ nodes.masterNode()
+ " marked shard as initializing, but shard is marked as failed, resend shard failure",
nodes.masterNode());
}
return;
}
try {
if (logger.isDebugEnabled()) {
logger.debug("[{}][{}] creating shard", shardRouting.index(), shardId);
}
IndexShard indexShard = indexService.createShard(shardId, shardRouting.primary());
indexShard.updateRoutingEntry(
shardRouting, state.blocks().disableStatePersistence() == false);
indexShard.addFailedEngineListener(failedEngineHandler);
} catch (IndexShardAlreadyExistsException e) {
// ignore this, the method call can happen several times
} catch (Throwable e) {
failAndRemoveShard(shardRouting, indexService, true, "failed to create shard", e);
return;
}
}
final IndexShard indexShard = indexService.shardSafe(shardId);
if (indexShard.ignoreRecoveryAttempt()) {
// we are already recovering (we can get to this state since the cluster event can happen
// several
// times while we recover)
logger.trace(
"ignoring recovery instruction for shard {} (shard state: [{}])",
indexShard.shardId(),
indexShard.state());
return;
}
if (isPeerRecovery(shardRouting)) {
try {
assert sourceNode != null : "peer recovery started but sourceNode is null";
// we don't mark this one as relocated at the end.
// For primaries: requests in any case are routed to both when its relocating and that way
// we handle
// the edge case where its mark as relocated, and we might need to roll it back...
// For replicas: we are recovering a backup from a primary
RecoveryState.Type type =
shardRouting.primary() ? RecoveryState.Type.RELOCATION : RecoveryState.Type.REPLICA;
recoveryTarget.startRecovery(
indexShard,
type,
sourceNode,
new PeerRecoveryListener(shardRouting, indexService, indexMetaData));
} catch (Throwable e) {
indexShard.failShard("corrupted preexisting index", e);
handleRecoveryFailure(indexService, shardRouting, true, e);
}
} else {
final IndexShardRoutingTable indexShardRouting =
routingTable.index(shardRouting.index()).shard(shardRouting.id());
indexService
.shard(shardId)
.recoverFromStore(
indexShardRouting,
new StoreRecoveryService.RecoveryListener() {
@Override
public void onRecoveryDone() {
shardStateAction.shardStarted(
shardRouting, indexMetaData.getIndexUUID(), "after recovery from store");
}
@Override
public void onIgnoreRecovery(String reason) {}
@Override
public void onRecoveryFailed(IndexShardRecoveryException e) {
handleRecoveryFailure(indexService, shardRouting, true, e);
}
});
}
}
