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57 changes: 57 additions & 0 deletions
57
src/java/org/apache/cassandra/service/reads/trackwarnings/WarnAbortCounter.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,57 @@ | ||
| /* | ||
| * Licensed to the Apache Software Foundation (ASF) under one | ||
| * or more contributor license agreements. See the NOTICE file | ||
| * distributed with this work for additional information | ||
| * regarding copyright ownership. The ASF licenses this file | ||
| * to you under the Apache License, Version 2.0 (the | ||
| * "License"); you may not use this file except in compliance | ||
| * with the License. You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
| package org.apache.cassandra.service.reads.trackwarnings; | ||
|
|
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| import java.util.Collections; | ||
| import java.util.Set; | ||
| import java.util.concurrent.ConcurrentHashMap; | ||
| import java.util.concurrent.atomic.AtomicLong; | ||
|
|
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| import org.apache.cassandra.locator.InetAddressAndPort; | ||
|
|
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| public class WarnAbortCounter | ||
| { | ||
| final Set<InetAddressAndPort> warnings = Collections.newSetFromMap(new ConcurrentHashMap<>()); | ||
| // the highest number reported by a node's warning | ||
| final AtomicLong maxWarningValue = new AtomicLong(); | ||
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|
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| final Set<InetAddressAndPort> aborts = Collections.newSetFromMap(new ConcurrentHashMap<>()); | ||
| // the highest number reported by a node's rejection. | ||
| final AtomicLong maxAbortsValue = new AtomicLong(); | ||
|
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| void addWarning(InetAddressAndPort from, long value) | ||
| { | ||
| maxWarningValue.accumulateAndGet(value, Math::max); | ||
| // call add last so concurrent reads see empty even if values > 0; if done in different order then | ||
| // size=1 could have values == 0 | ||
| warnings.add(from); | ||
| } | ||
|
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| void addAbort(InetAddressAndPort from, long value) | ||
| { | ||
| maxAbortsValue.accumulateAndGet(value, Math::max); | ||
| // call add last so concurrent reads see empty even if values > 0; if done in different order then | ||
| // size=1 could have values == 0 | ||
| aborts.add(from); | ||
| } | ||
|
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| public WarningsSnapshot.Warnings snapshot() | ||
| { | ||
| return WarningsSnapshot.Warnings.create(WarningsSnapshot.Counter.create(warnings, maxWarningValue), WarningsSnapshot.Counter.create(aborts, maxAbortsValue)); | ||
| } | ||
| } |
83 changes: 83 additions & 0 deletions
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src/java/org/apache/cassandra/service/reads/trackwarnings/WarningContext.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,83 @@ | ||
| /* | ||
| * Licensed to the Apache Software Foundation (ASF) under one | ||
| * or more contributor license agreements. See the NOTICE file | ||
| * distributed with this work for additional information | ||
| * regarding copyright ownership. The ASF licenses this file | ||
| * to you under the Apache License, Version 2.0 (the | ||
| * "License"); you may not use this file except in compliance | ||
| * with the License. You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
| package org.apache.cassandra.service.reads.trackwarnings; | ||
|
|
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| import java.util.Collections; | ||
| import java.util.EnumSet; | ||
| import java.util.Map; | ||
| import java.util.Set; | ||
|
|
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| import org.apache.cassandra.exceptions.RequestFailureReason; | ||
| import org.apache.cassandra.locator.InetAddressAndPort; | ||
| import org.apache.cassandra.net.ParamType; | ||
|
|
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| public class WarningContext | ||
| { | ||
| private static EnumSet<ParamType> SUPPORTED = EnumSet.of(ParamType.TOMBSTONE_WARNING, ParamType.TOMBSTONE_ABORT, | ||
| ParamType.LOCAL_READ_SIZE_WARN, ParamType.LOCAL_READ_SIZE_ABORT, | ||
| ParamType.ROW_INDEX_SIZE_WARN, ParamType.ROW_INDEX_SIZE_ABORT); | ||
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| final WarnAbortCounter tombstones = new WarnAbortCounter(); | ||
| final WarnAbortCounter localReadSize = new WarnAbortCounter(); | ||
| final WarnAbortCounter rowIndexTooLarge = new WarnAbortCounter(); | ||
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| public static boolean isSupported(Set<ParamType> keys) | ||
| { | ||
| return !Collections.disjoint(keys, SUPPORTED); | ||
| } | ||
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| public RequestFailureReason updateCounters(Map<ParamType, Object> params, InetAddressAndPort from) | ||
| { | ||
| for (Map.Entry<ParamType, Object> entry : params.entrySet()) | ||
| { | ||
| WarnAbortCounter counter = null; | ||
| RequestFailureReason reason = null; | ||
| switch (entry.getKey()) | ||
| { | ||
| case ROW_INDEX_SIZE_ABORT: | ||
| reason = RequestFailureReason.READ_SIZE; | ||
| case ROW_INDEX_SIZE_WARN: | ||
| counter = rowIndexTooLarge; | ||
| break; | ||
| case LOCAL_READ_SIZE_ABORT: | ||
| reason = RequestFailureReason.READ_SIZE; | ||
| case LOCAL_READ_SIZE_WARN: | ||
| counter = localReadSize; | ||
| break; | ||
| case TOMBSTONE_ABORT: | ||
| reason = RequestFailureReason.READ_TOO_MANY_TOMBSTONES; | ||
| case TOMBSTONE_WARNING: | ||
| counter = tombstones; | ||
| break; | ||
| } | ||
| if (reason != null) | ||
| { | ||
| counter.addAbort(from, ((Number) entry.getValue()).longValue()); | ||
| return reason; | ||
| } | ||
| if (counter != null) | ||
| counter.addWarning(from, ((Number) entry.getValue()).longValue()); | ||
| } | ||
| return null; | ||
| } | ||
|
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| public WarningsSnapshot snapshot() | ||
| { | ||
| return WarningsSnapshot.create(tombstones.snapshot(), localReadSize.snapshot(), rowIndexTooLarge.snapshot()); | ||
| } | ||
| } |