Analytics Configuration Parameters
The Couchbase Analytics Service has a number of configuration parameters to customize Analytics nodes. There are two categories of configuration parameters: service-level parameters and node-specific parameters.
Service-Level Parameters
Service-level parameters are applied to all nodes running the Analytics Service. These parameters can be used with the Service Configuration API to configure all Analytics Service nodes in the cluster.
For the configuration changes to take effect, you must restart the Analytics cluster using the Cluster Restart API. |
Parameter | Description | Default |
---|---|---|
activeMemoryGlobalBudget |
The memory budget (in bytes) for the active runtime. |
67108864 (64 MB) |
activeStopTimeout |
The maximum time (in seconds) to wait for a graceful stop of an active runtime. |
3600 |
activeSuspendTimeout |
The maximum time (in seconds) to wait for a graceful suspend of an active runtime. |
3600 |
analyticsHttpRequestQueueSize |
The maximum number of HTTP requests to queue pending ability to execute. |
256 |
analyticsHttpThreadCount |
The number of threads to service HTTP requests. |
16 |
clusterConnectRetries |
Number of attempts to contact CC before giving up. |
5 |
collectDcpStateFromNodesTimeout |
The maximum time to wait to collect DCP state from all nodes in seconds. |
600 |
compilerFramesize |
The page size (in bytes) for computation. |
32768 (32 kB) |
compilerGroupmemory |
The memory budget (in bytes) for a group by operator instance in a partition. |
33554432 (32 MB) |
compilerJoinmemory |
The memory budget (in bytes) for a join operator instance in a partition. |
33554432 (32 MB) |
compilerParallelism |
The degree of parallelism for query execution. Zero means to use the storage parallelism as the query execution parallelism, while other integer values dictate the number of query execution parallel partitions. The system will fall back to use the number of all available CPU cores in the cluster as the degree of parallelism if the number set by a user is too large or too small. |
0 |
compilerSortmemory |
The memory budget (in bytes) for a sort operator instance in a partition. |
33554432 (32 MB) |
coresMultiplier |
The factor to multiply by the number of cores to determine maximum query concurrent execution level. |
3 |
deadlockWatchdogHaltDelaySeconds |
The delay (in seconds) to wait for graceful shutdown due to deadlocked threads, before halting. |
120 |
deadlockWatchdogPollSeconds |
The frequency (in seconds) to scan for deadlocked threads. |
300 |
jobHistorySize |
Limits the number of historical jobs remembered by the system to the specified value. |
10 |
jobQueueCapacity |
The maximum number of jobs to queue before rejecting new jobs. |
4096 |
jvmArgs |
JVM args to pass to the Analytics Driver. |
<undefined> (null) |
logLevel |
The logging level. |
DEBUG |
maxWebRequestSize |
The maximum accepted web request size in bytes. |
52428800 (50 MB) |
netBufferCount |
Number of network buffers per input/output channel. |
1 |
netThreadCount |
Number of threads to use for Network I/O. |
1 |
resultSweepThreshold |
The duration within which an instance of the result cleanup should be invoked in milliseconds. |
60000 |
resultTtl |
Limits the amount of time results for asynchronous jobs should be retained by the system in milliseconds. |
86400000 |
storageBuffercacheMaxopenfiles |
The maximum number of open files in the buffer cache. |
2147483647 |
storageBuffercachePagesize |
The page size in bytes for pages in the buffer cache. |
131072 (128 kB) |
storageMaxActiveWritableDatasets |
The maximum number of datasets that can be concurrently modified. |
8 |
storageMemorycomponentNumcomponents |
The number of memory components to be used per LSM index. |
2 |
storageMemorycomponentPagesize |
The page size in bytes for pages allocated to memory components. |
131072 (128 kB) |
threaddumpFrequencySeconds |
The frequency (in seconds) at which to log diagnostic thread dumps. |
300 |
threaddumpLogLevel |
The log level at which to emit diagnostic thread dumps. |
DEBUG |
traceCategories |
Categories for tracing. |
[ ] (empty array — no categories) |
Node-Specific Parameters
The following parameters can be used with the Node Configuration API to configure the Analytics Service node that receives the change request.
For the configuration changes to take effect, you must restart the node using the Node Restart API, or restart the Analytics cluster using the Cluster Restart API. |
Parameter | Description | Default |
---|---|---|
jvmArgs |
JVM args to pass to the Analytics Driver. Node-specific JVM arguments are appended to service-level JVM arguments. If the same JVM argument appears in both the service-level arguments and the node-specific arguments, the node-specific argument takes priority. |
<undefined> (null) |
storageBuffercacheSize |
The size of memory allocated to the disk buffer cache. The value should be a multiple of the buffer cache page size. |
1/4 of the allocated Analytics Service memory |
storageMemorycomponentGlobalbudget |
The size of memory allocated to the memory components. The value should be a multiple of the memory component page size. |
1/4 of the allocated Analytics Service memory |