ErrLookup › alibaba/Sentinel

alibaba/Sentinel

A powerful flow control component enabling reliability, resilience and monitoring for microservices. (面向云原生微服务的高可用流控防护组件) · Java · 964 source files

Analyzed at a3f40ba8e9 on 2026-08-14. 89 documented errors.

Code / MessageTypeSeverityTags
${param}
exception warning gateway, param-flow, rate-limit, block-exception, sentinel
Cache max capacity should be positive
validation error sentinel, cache, constructor, validation
Illegal port
validation critical sentinel, transport, netty, configuration, startup
Null value
validation error sentinel, flow-control, rule-config, validation
Bad invocation instance
validation error dubbo, adapter, illegal-argument, null-check, rpc
file size= , is bigger than bufSize= . Can't read
exception error sentinel, datasource, file-size, buffer-overflow, java
Invalid content length
exception error sentinel, transport, http, protocol-error, content-length
is null
validation error eagleeye, null-check, precondition, illegal-argument, sentinel
charset is not allowed to be null
validation error sentinel, transport, http, charset, null-check
Incorrect number of labels.
validation error sentinel, prometheus, metrics, validation
UNEXPECTED_STATUS
unexpected status
exception error cluster, netty, internal-error, connection-reset, race-condition
maxSize must > 0
validation error sentinel, transport, http, constructor, validation
buf index out of range
exception error sentinel, transport, http, buffer-overflow, simple-http
No legal Content-Length
http warning sentinel, transport, http, content-length, simple-http
Invalid maxFileSizeMB
validation error eagleeye, logging, library-bug, illegal-argument, core
Consul has not been initialized or error occurred
exception critical sentinel, consul, datasource, initialization, network
Only form-encoded post request is supported
http warning sentinel, transport, http, content-type, simple-http
Bad async context state, expected entry
exception error async, core, illegal-state, call-stack, entry-exit
Interval cannot be less than 1
validation error eagleeye, stat-logger, config, interval, illegal-argument, sentinel
${path}
exception error servlet, path-traversal, security, illegal-state, url-normalization
Bad byte array
validation warning sentinel, transport, netty, codec, validation
Metadata key cannot be empty
validation warning sentinel, transport, http, validation
Parameter key cannot be empty
validation warning sentinel, transport, http, validation
Bad class metadata
validation error sentinel, transport, netty, null-check, codec
File can't be null or a directory
validation error sentinel, datasource, file, constructor-validation, java
Publisher type is not supported
exception error reactor, reactive-streams, illegal-state, adapter, publisher
The order of entry exit can't be paired with the order of…
exception error core, entry-exit, call-stack, resource-leak, error-entry-free
BAD_REQUEST
bad request
exception error cluster, validation, netty, bad-request
Request body is too big, limit size is 4194304
exception error sentinel, transport, http, payload-limit, simple-http
The sentinel_default_context can't be permit to defined!
validation error core, context, reserved-name, configuration, illegal-argument
arrayAdd() is unavailable if countAndSum() has been called
exception error eagleeye, stat-func, api-misuse, illegal-state, sentinel
Invalid HTTP status code
validation error spring-webmvc, servlet, configuration, http-status, illegal-argument
Invalid Value for Read Timeout set.
exception error sentinel, spring-cloud-config, timeout, configuration, java
CLIENT_NOT_READY
client not ready
exception error cluster, netty, network, token-server, not-ready
Could not locate PropertySource and the fail fast property…
exception critical sentinel, spring-cloud-config, config-server, fail-fast, startup-failure, java
Invalid map instance
validation error sentinel, cache, null-check, constructor
Empty rule config path, please set the file path in the…
exception error envoy, rls, configuration, environment, datasource
Can't get any data
exception error sentinel, eureka, datasource, service-discovery, network
arraySet() is unavailable if countAndSum() has been called
exception error eagleeye, stat-func, api-misuse, illegal-state, sentinel
Nacos config service has not been initialized or error…
exception error sentinel, datasource, nacos, initialization, runtime-error, java
Request cannot be null
validation error sentinel, transport, null-check, precondition
is null or empty
validation error eagleeye, validation, illegal-argument, null-check, core
Interval should be less than 5 min:
validation error eagleeye, stat-logger, config, interval, validation, illegal-argument, sentinel
Not a valid RLS rule
validation error envoy, rls, rule-conversion, yaml, illegal-argument
REQUEST_TIME_OUT
request time out
exception error cluster, timeout, netty, network, token-server
minMax() is unavailable if countAndSum() has been called
exception error eagleeye, stat-func, api-misuse, illegal-state, min-max, sentinel
Zookeeper has not been initialized or error occurred
exception error sentinel, datasource, zookeeper, curator, initialization, runtime-error, java
bufSize must between
validation error sentinel, datasource, jar, buffer, validation
Invalid DegradeRule:
validation error sentinel, circuit-breaker, degrade-rule, validation
No port present.
exception error sentinel, redis, host-and-port, config-parsing, java
Size of file < > exceeds the bufSize ( )
exception error sentinel, datasource, jar, buffer-overflow, config
Invalid flow config in request
validation error sentinel, cluster, dashboard, flow-config, validation
Invalid request
validation error sentinel, cluster, dashboard, validation
intervalMillis should be at least 1000, but given:
validation error sentinel, eagleeye, rate-limit, units, constructor-validation
Cannot build a RedisConnectionConfig. One of the following…
exception error sentinel, redis, builder, connection-config, constructor-validation, java
Invalid second interval (cannot divide by 60):
validation error eagleeye, stat-logger, config, interval, validation, illegal-argument, sentinel
maxTokens should > 0, but given:
validation error sentinel, eagleeye, rate-limit, constructor-validation
Bad argument: serverAddr=
validation error sentinel, datasource, zookeeper, constructor-validation, java
keys empty or null
validation error eagleeye, stat-entry, validation, illegal-argument, sentinel
batchAdd() is unavailable if minMax() has been called
exception error eagleeye, stat-func, api-misuse, illegal-state, min-max, batch, sentinel
Cold factor should be larger than 1
validation error sentinel, flow-control, warm-up, validation
Redis client or Redis Cluster client has not been…
exception error sentinel, datasource, redis, lettuce, initialization, runtime-error, java
Invalid intervalUnit
validation error sentinel, gateway, dashboard, flow-rule, validation
Invalid transport config in request
validation error sentinel, cluster, dashboard, transport-config, validation
Max entry count should be at least 1:
validation error eagleeye, stat-logger, config, validation, illegal-argument, sentinel
parser can't be null
validation error sentinel, datasource, converter, constructor-validation
arraySet() is unavailable if minMax() has been called
exception error eagleeye, stat-func, api-misuse, illegal-state, min-max, array, sentinel
Bad argument: ruleKey=
validation error sentinel, datasource, spring-cloud-config, constructor-validation, java
recommendRefreshMs must > 0, but
validation error sentinel, datasource, auto-refresh, validation
Invalid object: null
validation error sentinel, param-flow-control, null-argument, hot-param, java
count() is unavailable if minMax() has been called
exception error eagleeye, stat-func, api-misuse, illegal-state, min-max, sentinel
Bad argument: groupId=
validation error sentinel, datasource, nacos, constructor-validation, java
namespace set cannot be null
validation error sentinel, cluster, dashboard, namespace, validation
keys empty or null
validation error eagleeye, stat-entry, validation, illegal-argument, sentinel
Bad argument: serverAddr=
validation error sentinel, datasource, zookeeper, constructor-validation, java
baseDir can't be null
validation error sentinel, metrics, search, constructor-validation, filesystem
strArray() is unavailable if countAndSum() has been called
exception error eagleeye, stat-func, api-misuse, illegal-state, string-values, sentinel
baseFileName can't be null
validation error sentinel, metrics, search, constructor-validation
You must set either 'password' or 'authorization'
exception error sentinel, spring-cloud-config, authentication, configuration, java
charset can't be null
validation error sentinel, datasource, charset, constructor-validation, java
Config encoder cannot be null
validation error sentinel, datasource, null-argument, writable-datasource, constructor-validation, java
Null method
validation error sentinel, reflection, method-resource, null-check
batchAdd() is unavailable if countAndSum() has been called
exception error eagleeye, stat-func, api-misuse, illegal-state, batch, sentinel
arrayAdd() is unavailable if minMax() has been called
exception error eagleeye, stat-func, api-misuse, illegal-state, min-max, array, sentinel
Bad argument: serverAddr=
validation error sentinel, datasource, zookeeper, constructor-validation, java
strArray() is unavailable if minMax() has been called
exception error eagleeye, stat-func, api-misuse, illegal-state, min-max, string-values, sentinel
Bad file
validation error sentinel, datasource, file, writable-datasource, constructor-validation, java
countAndSum() is unavailable if minMax() has been called
exception error eagleeye, stat-func, api-misuse, illegal-state, min-max, sentinel
Charset cannot be null
validation error sentinel, datasource, charset, writable-datasource, constructor-validation, java