Question

全部，以下是我的架构：

CREATE TABLE test.lookup_provider_id (
provider_id text,
provider_source text,
gufi text,
PRIMARY KEY (provider_id, provider_source)
) WITH CLUSTERING ORDER BY (provider_source ASC)
AND bloom_filter_fp_chance = 0.01
AND caching = {'keys': 'ALL', 'rows_per_partition': 'NONE'}
AND comment = ''
AND compaction = {'class': 'org.apache.cassandra.db.compaction.SizeTieredCompactionStrategy', 'max_threshold': '32', 'min_threshold': '4'}
AND compression = {'chunk_length_in_kb': '64', 'class': 'org.apache.cassandra.io.compress.LZ4Compressor'}
AND crc_check_chance = 1.0
AND dclocal_read_repair_chance = 0.1
AND default_time_to_live = 604800
AND gc_grace_seconds = 864000
AND max_index_interval = 2048
AND memtable_flush_period_in_ms = 0
AND min_index_interval = 128
AND read_repair_chance = 0.0
AND speculative_retry = '99PERCENTILE';

使用Java驱动程序，我执行这种查询：

SELECT gufi FROM test.lookup_provider_id WHERE provider_id = 'id' AND provider_source = 'source';

我得到了这个例外：

java.util.concurrent.ExecutionException：com.datastax.driver.core.exceptions.ReadTimeoutException：在一致性LOCAL_ONE读取查询期间的Cassandra超时（需要1个响应，但仅响应0个副本）在com.google.common.util.concurrent.AbstractFuture.getDoneValue（AbstractFuture.java:476）在com.google.common.util.concurrent.AbstractFuture.get（AbstractFuture.java:455）在com.thales.ecosystem.common.hazelcast.mapstore.LookupProviderIDMapStore.load（LookupProviderIDMapStore.java:145）在com.thales.ecosystem.common.hazelcast.mapstore.LookupProviderIDMapStore.load（LookupProviderIDMapStore.java:42）在com.hazelcast.map.impl.MapStoreWrapper.load（MapStoreWrapper.java:152）在com.hazelcast.map.impl.mapstore.writebehind.WriteBehindStore.load（WriteBehindStore.java:205）在com.hazelcast.map.impl.mapstore.writebehind.WriteBehindStore.load（WriteBehindStore.java:55）在com.hazelcast.map.impl.recordstore.DefaultRecordStore.loadRecordOrNull（DefaultRecordStore.java:398）在com.hazelcast.map.impl.recordstore.DefaultRecordStore.get（DefaultRecordStore.java:612）在com.hazelcast.map.impl.operation.GetOperation.run（GetOperation.java:43）在com.hazelcast.spi.impl.operationservice.impl.OperationRunnerImpl.run（OperationRunnerImpl.java:186）在com.hazelcast.spi.impl.operationexecutor.impl.OperationExecutorImpl.run（OperationExecutorImpl.java:382） at com.hazelcast.spi.impl.operationexecutor.impl.OperationExecutorImpl.runOrExecute（OperationExecutorImpl.java:409）在com.hazelcast.spi.impl.operationservice.impl.Invocation.doInvokeLocal（Invocation.java:534）在com.hazelcast.spi.impl.operationservice.impl.Invocation.doInvoke（Invocation.java:519）在com.hazelcast.spi.impl.operationservice.impl.Invocation.invoke0（Invocation.java:490）在com.hazelcast.spi.impl.operationservice.impl.Invocation.invoke（Invocation.java:200）在com.hazelcast.spi.impl.operationservice.impl.InvocationBuilderImpl.invoke（InvocationBuilderImpl.java:59） at com.hazelcast.client.impl.protocol.task.AbstractPartitionMessageTask.processMessage（AbstractPartitionMessageTask.java:67） at com.hazelcast.client.impl.protocol.task.AbstractMessageTask.initializeAndProcessMessage（AbstractMessageTask.java:123）在com.hazelcast.client.impl.protocol.task.AbstractMessageTask.run（AbstractMessageTask.java:103）在com.hazelcast.spi.impl.operationservice.impl.OperationRunnerImpl.run（OperationRunnerImpl.java:142）在com.hazelcast.spi.impl.operationexecutor.impl.OperationThread.process（OperationThread.java:127）在com.hazelcast.spi.impl.operationexecutor.impl.OperationThread.run（OperationThread.java:102）引起：com.datastax.driver.core.exceptions.ReadTimeoutException：一致性LOCAL_ONE读取查询期间的Cassandra超时（需要1个响应但只响应0个副本）

我正在使用部署在不同VM（CentOS）上的9个Cassandra 3.10节点的集群。使用nodetool状态显示一切似乎都可以。我无法在日志中看到任何可以提供正在发生的事情的线索。

我有点失落，所以感谢任何帮助！

com.datastax.driver.core.exceptions.ReadTimeoutException：一致性读取查询期间的Cassandra超时LOCAL_ONE

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