1. The shop slot number is invalid. Technical Issues. I can't sell anything to NPCs anymore. This thread is archived.
2. SLSC module not found in the specified slot. Please check your SLSC hardware and make sure the custom device is inserted in the correct slot. SLSC module not found in the specified slot. Please check your SLSC hardware and make sure the custom device is inserted in the correct slot.
3. Currently in testing - FreeNAS 11.2-U4 IBM x3550 M4 2x Xeon E5-2650 2GHz 8 cores 192Gb RAM HBA1: M1215 crossflashed to LSI 9300-8i IT firmware HBA2: LSI 9201-16e.
4. Logs - /var/log/messages Jun 29 17:03:12 xxxxxx15 tldcd27154: TLD(0) Library communications established, but no drives in library Jun 29 17:03:12 xxxxxx15 tldd27005: TLD(0) unavailable: initialization failed: Unable to initialize robot Logs while running inventory - /var/log/messages Jun 29 16:06:14 xxxxxx15 tldcd27154: TLD(0) 1 is.

13:136 The maximum possible number of slots within all inserted slaves has been exceeded by%1 slot(s).' More slaves have been configured than permitted by the master system Split the slaves across different segments if possible or reduce the number of slaves for the master system concerned. 13:181 Internal error:Multicomputig cannot have the type.

The Slots in an Object from a Formal Class

Description

These functions return or set information about the individual slotsin an object.

Usage

Arguments

Details

The definition of the class specifies all slots directly andindirectly defined for that class. Each slot has a name and anassociated class. Extracting a slot returns an object from thatclass. Setting a slot first coerces the value to the specified slotand then stores it.

Unlike general attributes, slots are not partially matched, and askingfor (or trying to set) a slot with an invalid name for that classgenerates an error.

The @ extraction operator and slotfunction themselves do no checking against the class definition,simply matching the name in the object itself.The replacement forms do check (except for slot in the casecheck=FALSE). So long as slots are set without cheating, theextracted slots will be valid.

Specified Slot Number Was Invalid May

Be aware that there are two ways to cheat, both to be avoided butwith no guarantees. The obvious way is to assign a slot withcheck=FALSE. Also, slots in R are implemented asattributes, for the sake of some back compatibility. The currentimplementation does not prevent attributes being assigned, viaattr<-, and such assignments are not checked forlegitimate slot names.

Note that the '@' operators for extraction and replacement areprimitive and actually reside in the base package.

The replacement versions of '@' and slot() differ inthe computations done to coerce the right side of the assignment tothe declared class of the slot. Both verify that the value providedis from a subclass of the declared slot class. The slot()version will go on to call the coerce method if there is one, ineffect doing the computation as(value, slotClass, strict = FALSE). The '@' version just verifies the relation,leaving any coerce to be done later (e.g., when a relevant method isdispatched).

In most uses the result is equivalent, and the '@' versionsaves an extra function call, but if empirical evidence shows that aconversion is needed, either call as() before the replacementor use the replacement version of slot().

Value

The '@' operator and the slot function extract orreplace the formally defined slots for the object.

Functions slotNames and getSlots return respectively thenames of the slots and the classes associated with the slots in thespecified class definition. Except for its extended interpretation ofx (above), slotNames(x) is just names(getSlots(x)).

References

Chambers, John M. (2008)Software for Data Analysis: Programming with RSpringer. (For the R version.)

Chambers, John M. (1998)Programming with DataSpringer (For the original S4 version.)

See Also

@,Classes_Details,Methods_Details,getClass,names.

Examples

Azure Web App Deployment Slots are used to deploy new versions of an application code into production with no interruption to the production traffic. In order to achieve this the swap process involves multiple steps that are performed to prepare the new version of the code to successfully handle the load once it is in production slot. Some of these steps may go wrong, especially when the new version of the code does not cooperate well. This in turn either causes the swap to fail or it results in swapping new code in production while it is still not ready to handle the production load. This post describes the most common reasons why this may happen and how to correct them.

In order to better understand the reasons for the swap failures it is first necessary to explain how the application code in the staging slot is initialized / warmed up prior to the swap to production. Failures during these steps are the most common reasons for the overall failure of the swap operation.

The swap operation is done by an internal process that runs within a scale unit where web app is hosted. Here are the steps that it performs to ensure the application is initialized prior to the swap. Note that the same sequence of actions happens during Auto-Swap and Swap with Preview.

• Apply the production configuration settings to all web app’s instances in the staging slot. This happens when web app has appsettings or connection strings marked as “Slot settings” or if Continuous Deployment is enabled for the site or if Site Authentication is enabled. This will trigger all instances in the staging slot to restart. (For Swap with Preview this the first phase of the swap after which the swap process is paused and you can validate that the application works correctly with production settings)
• Wait for every instance to complete its restart. If some instance failed to restart then the swap process will revert any configuration changes to the app in staging slot and will not proceed further. If that happens the first place to look into is the D:homeLogFileseventlog.xml file of the application specific error log (such as php_errors.log for PHP apps) where you may find more clues what prevents application from starting.
• If Local Cache is enabled then swap process will trigger Local Cache initialization by making an HTTP request to the root directory URL path (“/”) of the web app on every web worker. Local Cache Initialization consists of copying the site’s content files from network share to the local disk of the worker and then re-pointing the web app to use local disk for its content. This causes another restart of the web app. The swap process will wait until the Local Cache is completely initialized and restarted on every instance before proceeding further. A common reason why Local Cache Initialization may fail is when site content size exceeds the local disk quota specified for the Local Cache. If that is the case the the quota can be increased by following instructions from Local Cache Documentation.
• If Application Initialization (AppInit) is enabled then swap process will make another HTTP request to the root URL path on every web worker. The AppInit is a module that runs within the web app request processing pipeline and it gets executed when web app starts. The only thing the swap process does with its first HTTP request to the web app is it triggers the AppInit module to do its work. After that it just waits until AppInit reports that it has completed the warmup. AppInit module uses the list of URL paths specified inside web.config file and makes internal HTTP requests to each of those. All these requests are within the web app process. It does not call any external URL’s and its requests are not going through the scale unit’s front ends. Also, neither the initial HTTP request nor AppInit internal requests follow HTTP redirects. That causes the most common problem that users run into with this module. If web app has such rewrite rules as “Enforce Domain” or “Enforce HTTPs” then none of the warmup requests will actually reach the application code. All the requests will be shortcut by the rewrite rules. In order to prevent that the rewrite rules need to be modified like below:

The {WARMUP_REQUEST} is a server variable that is set by AppInit module for each of its internal requests. That is a reliable way to distinguish whether the request is external or is made by AppInit module. The {REMOTE_ADDR} is a server variable that contains the IP address of HTTP client. The IP address ranges starting with “10.” or “100.” are internal to the scale unit and no outside HTTP client can use them.

• If AppInit is not enabled then swap process just makes an HTTP request to the root path of the webapp on each web worker and as long as it receives some HTTP response it considers the warmup complete. Again the rewrite rules in the web app can cause the site to return HTTP redirect response and the actual application code will not be executed at all. Since the AppInit is not involved here the only way to prevent the rewrite rules is to use the {REMOTE_ADDR} server variable in the rule’s conditions as shown below.

• After all the above steps are completed successfully the actual swap is performed by switching the routing rules on the scale unit’s front ends. More details on what happens during the swap can be found in other blog post “How to warm up Azure Web App during deployment slots swap”

Specified Slot Number Was Invalid As A

Some other common problems that cause the swap to fail:

Specified Slot Number Was Invalid Due

• An HTTP request to the root URL path times out. The swap process waits for 90 seconds for the request to return. In case of timeout the request will be retried for up to 5 times. If after that the request still times out then the swap operation will be aborted. If that happens then check the eventlog.xml or application specific error log to see if there are any indications of what causes the timeout.
• An HTTP request to the root URL path is aborted. This may happen if web app has a rewrite rule to abort some requests. If that is the case then the rule can be modified by adding the {REMOTE_ADDR} check as shown in previous examples.
• Web App has IP restriction rules that prevent the swap process from connecting to it. In that case you’ll need to allow the internal IP address range used by the swap process: