Tableau Connector for Cassandra

Build 24.0.9060

Connection String Options

The connection string properties are the various options that can be used to establish a connection. This section provides a complete list of the options you can configure in the connection string for this provider. Click the links for further details.

For more information on establishing a connection, see Establishing a Connection.

Authentication


PropertyDescription
AuthSchemeThe scheme used for authentication. Accepted entries are Basic, DSE, Kerberos, and LDAP.
ServerThe host name or IP address of the server hosting the Cassandra database.
PortThe port for the Cassandra database.
LDAPServerThe host name or IP address of the LDAP server.
UserThe Cassandra user account used to authenticate.
PasswordThe password used to authenticate the user.
LDAPPortThe port for the LDAP server.
DatabaseThe name of the Cassandra keyspace.
DefaultLDAPUserThe default LDAP user used to connect to and communicate with the server, it must be set if the LDAP server do not allow anonymous bind.
LDAPPasswordThe password of the default LDAP user. It must be set if the LDAP server do not allow anonymous bind.
SearchBaseThe search base for your LDAPServer, used to look up users.
SearchFilterThe search filter for looking up usernames in LDAP. The default setting is (uid=), When using Active Directory set the filter to (sAMAccountName=).
UseSSLThis field sets whether SSL is enabled.

Kerberos


PropertyDescription
KerberosKDCThe Kerberos Key Distribution Center (KDC) service used to authenticate the user.
KerberosRealmThe Kerberos Realm used to authenticate the user.
KerberosSPNThe service principal name (SPN) for the Kerberos Domain Controller.
KerberosUserThe principal name for the Kerberos Domain Controller. Used in the format host/user@realm.
KerberosKeytabFileThe Keytab file containing your pairs of Kerberos principals and encrypted keys.
KerberosServiceRealmThe Kerberos realm of the service.
KerberosServiceKDCThe Kerberos KDC of the service.
KerberosTicketCacheThe full file path to an MIT Kerberos credential cache file.

SSL


PropertyDescription
SSLClientCertThe TLS/SSL client certificate store for SSL Client Authentication (2-way SSL).
SSLClientCertTypeThe type of key store containing the TLS/SSL client certificate.
SSLClientCertPasswordThe password for the TLS/SSL client certificate.
SSLClientCertSubjectThe subject of the TLS/SSL client certificate.
SSLServerCertThe certificate to be accepted from the server when connecting using TLS/SSL.

SSH


PropertyDescription
SSHAuthModeThe authentication method used when establishing an SSH Tunnel to the service.
SSHClientCertA certificate to be used for authenticating the SSHUser.
SSHClientCertPasswordThe password of the SSHClientCert key if it has one.
SSHClientCertSubjectThe subject of the SSH client certificate.
SSHClientCertTypeThe type of SSHClientCert private key.
SSHServerThe SSH server.
SSHPortThe SSH port.
SSHUserThe SSH user.
SSHPasswordThe SSH password.
SSHServerFingerprintThe SSH server fingerprint.
UseSSHWhether to tunnel the Cassandra connection over SSH. Use SSH.

Firewall


PropertyDescription
FirewallTypeThe protocol used by a proxy-based firewall.
FirewallServerThe name or IP address of a proxy-based firewall.
FirewallPortThe TCP port for a proxy-based firewall.
FirewallUserThe user name to use to authenticate with a proxy-based firewall.
FirewallPasswordA password used to authenticate to a proxy-based firewall.

Logging


PropertyDescription
LogfileA filepath which designates the name and location of the log file.
VerbosityThe verbosity level that determines the amount of detail included in the log file.
LogModulesCore modules to be included in the log file.
MaxLogFileSizeA string specifying the maximum size in bytes for a log file (for example, 10 MB).
MaxLogFileCountA string specifying the maximum file count of log files.

Schema


PropertyDescription
LocationA path to the directory that contains the schema files defining tables, views, and stored procedures.
BrowsableSchemasThis property restricts the schemas reported to a subset of the available schemas. For example, BrowsableSchemas=SchemaA,SchemaB,SchemaC.
TablesThis property restricts the tables reported to a subset of the available tables. For example, Tables=TableA,TableB,TableC.
ViewsRestricts the views reported to a subset of the available tables. For example, Views=ViewA,ViewB,ViewC.

Caching


PropertyDescription
AutoCacheAutomatically caches the results of SELECT queries into a cache database specified by either CacheLocation or both of CacheConnection and CacheProvider .
CacheDriverThe database driver used to cache data.
CacheConnectionThe connection string for the cache database. This property is always used in conjunction with CacheProvider . Setting both properties will override the value set for CacheLocation for caching data.
CacheLocationSpecifies the path to the cache when caching to a file.
CacheToleranceThe tolerance for stale data in the cache specified in seconds when using AutoCache .
OfflineUse offline mode to get the data from the cache instead of the live source.
CacheMetadataThis property determines whether or not to cache the table metadata to a file store.

Miscellaneous


PropertyDescription
AggregationsSupportedWhether or not to support aggregations in the Cassandra server. Note that in queries to the provider, you must use single quotes to define strings.
AllowFilteringWhen true, slow-performing queries are processed on the server.
BatchSizeThe maximum size of each batch operation to submit.
CaseSensitivityEnable case sensitivity to the CQL sending to the server, if set to True, the identifiers in the CQL will be enclosed in double quotation marks.
ConnectionLifeTimeThe maximum lifetime of a connection in seconds. Once the time has elapsed, the connection object is disposed.
ConnectOnOpenThis property specifies whether to connect to the Cassandra when the connection is opened.
ConsistencyLevelThe consistency level determines how many of the replicas of the data you are interacting with need to respond for the query to be considered a success.
FlattenArraysBy default, nested arrays are returned as strings of JSON. The FlattenArrays property can be used to flatten the elements of nested arrays into columns of their own. Set FlattenArrays to the number of elements you want to return from nested arrays.
FlattenObjectsSet FlattenObjects to true to flatten object properties into columns of their own. Otherwise, objects nested in arrays are returned as strings of JSON.
MaxRowsLimits the number of rows returned when no aggregation or GROUP BY is used in the query. This takes precedence over LIMIT clauses.
NullToUnsetUse unset instead of NULL in CQL query when performing INSERT operations.
OtherThese hidden properties are used only in specific use cases.
PagesizeThe maximum number of results to return per page from Cassandra.
PoolIdleTimeoutThe allowed idle time for a connection before it is closed.
PoolMaxSizeThe maximum connections in the pool.
PoolMinSizeThe minimum number of connections in the pool.
PoolWaitTimeThe max seconds to wait for an available connection.
PseudoColumnsSpecify a set of pseudocolumns to expose as columns.
QueryPassthroughThis option passes the query to the Cassandra server as is.
ReadonlyYou can use this property to enforce read-only access to Cassandra from the provider.
RowScanDepthThe maximum number of rows to scan to look for the columns available in a table.
RTKThe runtime key used for licensing.
TimeoutThe value in seconds until the timeout error is thrown, canceling the operation.
UseConnectionPoolingThis property enables connection pooling.
UseJsonFormatWhether to submit and return the JSON encoding for CQL data types.
UserDefinedViewsA filepath pointing to the JSON configuration file containing your custom views.
VarintToStringMap Cassandra VARINT to String value.

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Build 24.0.9060