Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Batch Index Settings Update Requests #82896

Merged
merged 13 commits into from
Jan 25, 2022
Merged

Batch Index Settings Update Requests #82896

Changes from 6 commits
Commits
Show all changes
13 commits
Select commit Hold shift + click to select a range
2edfaa7
Whitespace
joegallo Jan 20, 2022
b93782f
Assign these in constructor argument order
joegallo Jan 20, 2022
11ca164
Just use metadata() here
joegallo Jan 12, 2022
82fab8c
Extract a clusterTask to pass, rather than on-the-fly
joegallo Jan 11, 2022
2c0c648
Move the reroute *slightly* later
joegallo Jan 20, 2022
86b0913
Use a reroute-after-tasks-finished executor
joegallo Jan 20, 2022
56f4b9f
This gets the tests passing again
joegallo Jan 24, 2022
dc452c7
Rename this variable, s/closeIndices/closedIndices/g
joegallo Jan 24, 2022
0badf30
Merge branch 'master' into batch-settings-update
joegallo Jan 24, 2022
be4de6c
Skip the reroute if the whole batch was a noop
joegallo Jan 24, 2022
92bc39d
Rework test code, remove adaptAutoExpandReplicas hack
joegallo Jan 25, 2022
5528109
Merge branch 'master' into batch-settings-update
joegallo Jan 25, 2022
fd89e17
Update docs/changelog/82896.yaml
joegallo Jan 25, 2022
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
274 changes: 144 additions & 130 deletions server/src/main/java/org/elasticsearch/cluster/metadata/MetadataUpdateSettingsService.java
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -17,6 +17,7 @@
import org.elasticsearch.cluster.AckedClusterStateUpdateTask;
import org.elasticsearch.cluster.ClusterState;
import org.elasticsearch.cluster.ClusterStateTaskExecutor;
import org.elasticsearch.cluster.ClusterStateTaskExecutor.ClusterTasksResult;
import org.elasticsearch.cluster.block.ClusterBlock;
import org.elasticsearch.cluster.block.ClusterBlocks;
import org.elasticsearch.cluster.routing.RoutingTable;
Expand Down Expand Up @@ -50,13 +51,12 @@ public class MetadataUpdateSettingsService {
private static final Logger logger = LogManager.getLogger(MetadataUpdateSettingsService.class);

private final ClusterService clusterService;

private final AllocationService allocationService;

private final IndexScopedSettings indexScopedSettings;
private final IndicesService indicesService;
private final ShardLimitValidator shardLimitValidator;
private final ThreadPool threadPool;
private final ClusterStateTaskExecutor<AckedClusterStateUpdateTask> executor;

public MetadataUpdateSettingsService(
ClusterService clusterService,
Expand All @@ -67,11 +67,26 @@ public MetadataUpdateSettingsService(
ThreadPool threadPool
) {
this.clusterService = clusterService;
this.threadPool = threadPool;
this.allocationService = allocationService;
this.indexScopedSettings = indexScopedSettings;
this.indicesService = indicesService;
this.shardLimitValidator = shardLimitValidator;
this.threadPool = threadPool;
this.executor = (currentState, tasks) -> {
ClusterTasksResult.Builder<AckedClusterStateUpdateTask> builder = ClusterTasksResult.builder();
ClusterState state = currentState;
for (AckedClusterStateUpdateTask task : tasks) {
try {
state = task.execute(state);
builder.success(task);
} catch (Exception e) {
builder.failure(task, e);
}
}
// reroute in case things change that require it (like number of replicas)
state = allocationService.reroute(state, "settings update");
Copy link
Member

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

let's skip this in case the batch was a NOOP and currentState == state

Copy link
Contributor Author

@joegallo joegallo Jan 24, 2022 •
edited
Loading

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

👍, be4de6c

return builder.build(state);
};
}

public void updateSettings(final UpdateSettingsClusterStateUpdateRequest request, final ActionListener<AcknowledgedResponse> listener) {
Expand Down Expand Up @@ -105,149 +120,149 @@ public void updateSettings(final UpdateSettingsClusterStateUpdateRequest request
final Settings openSettings = settingsForOpenIndices.build();
final boolean preserveExisting = request.isPreserveExisting();

clusterService.submitStateUpdateTask(
"update-settings " + Arrays.toString(request.indices()),
new AckedClusterStateUpdateTask(Priority.URGENT, request, wrapPreservingContext(listener, threadPool.getThreadContext())) {

@Override
public ClusterState execute(ClusterState currentState) {
// TODO: move this to custom class instead of AckedClusterStateUpdateTask
AckedClusterStateUpdateTask clusterTask = new AckedClusterStateUpdateTask(
Priority.URGENT,
request,
wrapPreservingContext(listener, threadPool.getThreadContext())
) {
@Override
public ClusterState execute(ClusterState currentState) {
RoutingTable.Builder routingTableBuilder = null;
Metadata.Builder metadataBuilder = Metadata.builder(currentState.metadata());

RoutingTable.Builder routingTableBuilder = null;
Metadata.Builder metadataBuilder = Metadata.builder(currentState.metadata());

// allow to change any settings to a close index, and only allow dynamic settings to be changed
// on an open index
Set<Index> openIndices = new HashSet<>();
Set<Index> closeIndices = new HashSet<>();
final String[] actualIndices = new String[request.indices().length];
for (int i = 0; i < request.indices().length; i++) {
Index index = request.indices()[i];
actualIndices[i] = index.getName();
final IndexMetadata metadata = currentState.metadata().getIndexSafe(index);
if (metadata.getState() == IndexMetadata.State.OPEN) {
openIndices.add(index);
} else {
closeIndices.add(index);
}
// allow to change any settings to a close index, and only allow dynamic settings to be changed
// on an open index
Set<Index> openIndices = new HashSet<>();
Set<Index> closeIndices = new HashSet<>();
final String[] actualIndices = new String[request.indices().length];
for (int i = 0; i < request.indices().length; i++) {
Index index = request.indices()[i];
actualIndices[i] = index.getName();
final IndexMetadata metadata = currentState.metadata().getIndexSafe(index);
if (metadata.getState() == IndexMetadata.State.OPEN) {
openIndices.add(index);
} else {
closeIndices.add(index);
}
}

if (skippedSettings.isEmpty() == false && openIndices.isEmpty() == false) {
throw new IllegalArgumentException(
String.format(
Locale.ROOT,
"Can't update non dynamic settings [%s] for open indices %s",
skippedSettings,
openIndices
)
);
}
if (skippedSettings.isEmpty() == false && openIndices.isEmpty() == false) {
throw new IllegalArgumentException(
String.format(
Locale.ROOT,
"Can't update non dynamic settings [%s] for open indices %s",
skippedSettings,
openIndices
)
);
}

if (IndexMetadata.INDEX_NUMBER_OF_REPLICAS_SETTING.exists(openSettings)) {
final int updatedNumberOfReplicas = IndexMetadata.INDEX_NUMBER_OF_REPLICAS_SETTING.get(openSettings);
if (preserveExisting == false) {
// Verify that this won't take us over the cluster shard limit.
shardLimitValidator.validateShardLimitOnReplicaUpdate(currentState, request.indices(), updatedNumberOfReplicas);
if (IndexMetadata.INDEX_NUMBER_OF_REPLICAS_SETTING.exists(openSettings)) {
final int updatedNumberOfReplicas = IndexMetadata.INDEX_NUMBER_OF_REPLICAS_SETTING.get(openSettings);
if (preserveExisting == false) {
// Verify that this won't take us over the cluster shard limit.
shardLimitValidator.validateShardLimitOnReplicaUpdate(currentState, request.indices(), updatedNumberOfReplicas);

/*
* We do not update the in-sync allocation IDs as they will be removed upon the first index operation
* which makes these copies stale.
*
* TODO: should we update the in-sync allocation IDs once the data is deleted by the node?
*/
routingTableBuilder = RoutingTable.builder(currentState.routingTable());
routingTableBuilder.updateNumberOfReplicas(updatedNumberOfReplicas, actualIndices);
metadataBuilder.updateNumberOfReplicas(updatedNumberOfReplicas, actualIndices);
logger.info("updating number_of_replicas to [{}] for indices {}", updatedNumberOfReplicas, actualIndices);
}
/*
* We do not update the in-sync allocation IDs as they will be removed upon the first index operation
* which makes these copies stale.
*
* TODO: should we update the in-sync allocation IDs once the data is deleted by the node?
*/
routingTableBuilder = RoutingTable.builder(currentState.routingTable());
routingTableBuilder.updateNumberOfReplicas(updatedNumberOfReplicas, actualIndices);
metadataBuilder.updateNumberOfReplicas(updatedNumberOfReplicas, actualIndices);
logger.info("updating number_of_replicas to [{}] for indices {}", updatedNumberOfReplicas, actualIndices);
}
}

updateIndexSettings(
openIndices,
metadataBuilder,
(index, indexSettings) -> indexScopedSettings.updateDynamicSettings(
openSettings,
indexSettings,
Settings.builder(),
index.getName()
),
preserveExisting,
indexScopedSettings
);
updateIndexSettings(
openIndices,
metadataBuilder,
(index, indexSettings) -> indexScopedSettings.updateDynamicSettings(
openSettings,
indexSettings,
Settings.builder(),
index.getName()
),
preserveExisting,
indexScopedSettings
);

updateIndexSettings(
closeIndices,
metadataBuilder,
(index, indexSettings) -> indexScopedSettings.updateSettings(
closedSettings,
indexSettings,
Settings.builder(),
index.getName()
),
preserveExisting,
indexScopedSettings
);
updateIndexSettings(
closeIndices,
metadataBuilder,
(index, indexSettings) -> indexScopedSettings.updateSettings(
closedSettings,
indexSettings,
Settings.builder(),
index.getName()
),
preserveExisting,
indexScopedSettings
);

if (IndexSettings.INDEX_TRANSLOG_RETENTION_AGE_SETTING.exists(normalizedSettings)
|| IndexSettings.INDEX_TRANSLOG_RETENTION_SIZE_SETTING.exists(normalizedSettings)) {
for (String index : actualIndices) {
final Settings settings = metadataBuilder.get(index).getSettings();
MetadataCreateIndexService.validateTranslogRetentionSettings(settings);
MetadataCreateIndexService.validateStoreTypeSetting(settings);
}
if (IndexSettings.INDEX_TRANSLOG_RETENTION_AGE_SETTING.exists(normalizedSettings)
|| IndexSettings.INDEX_TRANSLOG_RETENTION_SIZE_SETTING.exists(normalizedSettings)) {
for (String index : actualIndices) {
final Settings settings = metadataBuilder.get(index).getSettings();
MetadataCreateIndexService.validateTranslogRetentionSettings(settings);
MetadataCreateIndexService.validateStoreTypeSetting(settings);
}
boolean changed = false;
// increment settings versions
for (final String index : actualIndices) {
if (same(currentState.metadata().index(index).getSettings(), metadataBuilder.get(index).getSettings()) == false) {
changed = true;
final IndexMetadata.Builder builder = IndexMetadata.builder(metadataBuilder.get(index));
builder.settingsVersion(1 + builder.settingsVersion());
metadataBuilder.put(builder);
}
}
boolean changed = false;
// increment settings versions
for (final String index : actualIndices) {
if (same(currentState.metadata().index(index).getSettings(), metadataBuilder.get(index).getSettings()) == false) {
changed = true;
final IndexMetadata.Builder builder = IndexMetadata.builder(metadataBuilder.get(index));
builder.settingsVersion(1 + builder.settingsVersion());
metadataBuilder.put(builder);
}
}

final ClusterBlocks.Builder blocks = ClusterBlocks.builder().blocks(currentState.blocks());
boolean changedBlocks = false;
for (IndexMetadata.APIBlock block : IndexMetadata.APIBlock.values()) {
changedBlocks |= maybeUpdateClusterBlock(actualIndices, blocks, block.block, block.setting, openSettings);
}
changed |= changedBlocks;
final ClusterBlocks.Builder blocks = ClusterBlocks.builder().blocks(currentState.blocks());
boolean changedBlocks = false;
for (IndexMetadata.APIBlock block : IndexMetadata.APIBlock.values()) {
changedBlocks |= maybeUpdateClusterBlock(actualIndices, blocks, block.block, block.setting, openSettings);
}
changed |= changedBlocks;

if (changed == false) {
return currentState;
}
if (changed == false) {
return currentState;
}

ClusterState updatedState = ClusterState.builder(currentState)
.metadata(metadataBuilder)
.routingTable(routingTableBuilder == null ? currentState.routingTable() : routingTableBuilder.build())
.blocks(changedBlocks ? blocks.build() : currentState.blocks())
.build();
ClusterState updatedState = ClusterState.builder(currentState)
.metadata(metadataBuilder)
.routingTable(routingTableBuilder == null ? currentState.routingTable() : routingTableBuilder.build())
.blocks(changedBlocks ? blocks.build() : currentState.blocks())
.build();

// now, reroute in case things change that require it (like number of replicas)
updatedState = allocationService.reroute(updatedState, "settings update");
try {
for (Index index : openIndices) {
final IndexMetadata currentMetadata = currentState.getMetadata().getIndexSafe(index);
final IndexMetadata updatedMetadata = updatedState.metadata().getIndexSafe(index);
indicesService.verifyIndexMetadata(currentMetadata, updatedMetadata);
}
for (Index index : closeIndices) {
final IndexMetadata currentMetadata = currentState.getMetadata().getIndexSafe(index);
final IndexMetadata updatedMetadata = updatedState.metadata().getIndexSafe(index);
// Verifies that the current index settings can be updated with the updated dynamic settings.
indicesService.verifyIndexMetadata(currentMetadata, updatedMetadata);
// Now check that we can create the index with the updated settings (dynamic and non-dynamic).
// This step is mandatory since we allow to update non-dynamic settings on closed indices.
indicesService.verifyIndexMetadata(updatedMetadata, updatedMetadata);
}
} catch (IOException ex) {
throw ExceptionsHelper.convertToElastic(ex);
try {
for (Index index : openIndices) {
final IndexMetadata currentMetadata = currentState.metadata().getIndexSafe(index);
final IndexMetadata updatedMetadata = updatedState.metadata().getIndexSafe(index);
indicesService.verifyIndexMetadata(currentMetadata, updatedMetadata);
}
for (Index index : closeIndices) {
final IndexMetadata currentMetadata = currentState.metadata().getIndexSafe(index);
final IndexMetadata updatedMetadata = updatedState.metadata().getIndexSafe(index);
// Verifies that the current index settings can be updated with the updated dynamic settings.
indicesService.verifyIndexMetadata(currentMetadata, updatedMetadata);
// Now check that we can create the index with the updated settings (dynamic and non-dynamic).
// This step is mandatory since we allow to update non-dynamic settings on closed indices.
indicesService.verifyIndexMetadata(updatedMetadata, updatedMetadata);
}
return updatedState;
} catch (IOException ex) {
throw ExceptionsHelper.convertToElastic(ex);
}
},
ClusterStateTaskExecutor.unbatched()
);

return updatedState;
}
};

clusterService.submitStateUpdateTask("update-settings " + Arrays.toString(request.indices()), clusterTask, this.executor);
}

public static void updateIndexSettings(
Expand All @@ -256,7 +271,6 @@ public static void updateIndexSettings(
BiFunction<Index, Settings.Builder, Boolean> settingUpdater,
Boolean preserveExisting,
IndexScopedSettings indexScopedSettings

) {
for (Index index : indices) {
IndexMetadata indexMetadata = metadataBuilder.getSafe(index);
Expand Down