Abstract: A computer-implemented method according to one embodiment includes receiving, from an application at a metadata node of a clustered computing system, a request for a file, identifying, by the metadata node, a subset of data nodes within the clustered computing system where a portion of the file is stored, determining, by the metadata node, a data node within the subset of data nodes storing the portion of the file in a cache of the data node, and returning to the application, by the metadata node, a location of the portion of the file at the data node storing the portion of the file in the cache of the data node.

Abstract: A computer-implemented method according to one embodiment includes receiving, from an application at a metadata node of a clustered computing system, a request for a file, identifying, by the metadata node, a subset of data nodes within the clustered computing system where a portion of the file is stored, determining, by the metadata node, a data node within the subset of data nodes storing the portion of the file in a cache of the data node, and returning to the application, by the metadata node, a location of the portion of the file at the data node storing the portion of the file in the cache of the data node.

Abstract: A device and method for detecting presence of a hazardous material in an environment or through a testing material, such as for example, a protective material. The device may include a sensor for detecting presence of the hazardous material. In particular, the hazardous material may have a vapor pressure of less than 0.5 mmHg. The sensor may comprise a conductive polymer, a semi-conductive polymer or an electroactive polymer, the sensor being chemically reactive with the hazardous material to generate a change in electrical resistance in the sensor. The device may include one or more conductive electrodes attached to the sensor configured to detect change in resistance in the sensor, and a resistance measuring device electronically connected to the one or more electrodes for receiving data from the electrodes and generating an output based on the data corresponding to an amount of hazardous material detected by the sensor in real-time.

Abstract: A device and method for detecting presence of a hazardous material in an environment or through a testing material, such as for example, a protective material. The device may include a sensor for detecting presence of the hazardous material. The sensor may comprise or be formed from a conductive polymer, a semi-conductive polymer or an electroactive polymer, the sensor being chemically reactive with the hazardous material to generate a change in electrical resistance in the sensor. The device may further include one or more conductive electrodes attached to the sensor configured to detect a change in resistance in the sensor, and a resistance measuring device electronically connected to the one or more electrodes for receiving data from the one or more electrodes and generating an output based on the data corresponding to an amount of hazardous material detected by the sensor in real-time.

Abstract: A secure single sign on is extended to a legacy web application that does not support the specific user authentication technique being used, such as SAML or OAuth. A proxy intercepts a request by a client computer to access the legacy application, and forwards the intercepted request to a single sign on identity provider. The identity provider authenticates the user, using the specific authentication technique not supported by the legacy application, and provides an indication of success to the proxy. The proxy transmits a user id and master password wrapped in an HTTP request to the legacy web application, which authenticates the request, creates a session and provides corresponding cookies to the proxy. The proxy forwards the cookies to the client, which utilizes them to continue the session with the legacy application.