Wombat (August 2018)¶
Features and Upgrades¶
| Title | Git Issue | Description |
|---|---|---|
| Java version upgrade | 821 | Upgraded Java8 version to 172 |
| SBT version upgrade | 748 | Upgraded SBT to version to 1.1.5 |
| Scala version upgrade | 806 | Scala version upgraded from 2.12.5 to 2.12.6 |
| HTTPS prefix not saved in subject path | 857 | Previously the http prefix in an infoton subject's path was dropped (e.g. http://example.org/abc to /example.org/abc), while https was retained in the path (e.g. http://example.org/abc to https.example.org/abc). Now the https prefix is omitted as well. |
| New release info file in CM-Well install package | 827 | A new cmwell.properties file is now included in the CM-Well installation package. It contains the CM-Well release name and version, and the last Git commit ID added to the release.Example: {"git_commit_version": "90a2e179a6b46351a0cab18e45000aad3c0d35c4", "cm-well_release": "Viper", "cm-well_version": "1.5.x-SNAPSHOT"} |
| Minor change to Health Dashboard | 796 | When a Cassandra node's status is Red, the relevant text will be in red bold font. |
| Data Consistency Crawler (DCC) now detects duplicate infotons | 863 | DCC now detects situations where an Infoton has more than one version in ElasticSearch with the current=true property. |
| DCC performance improvement | 752 | When fetching system fields for comparison, DCC now ignores the payload of FileInfotons (which is a system field). This improves runtime and lowers system stress. |
| DCC Detection Parallelism is now configurable | 780 | The configuration key cmwell.crawler.checkParallelism was added. Default value is 1. This controls the DCC's level of parallel processing. |
| Data Consistency Tools added to code repository | 817 | This is a set of tools that utlilizes SPARK to check consistency of Infotons in a CM-Well Cluster. |
| Calculate total agent runtime | 814 | The total time an STP agent has been running for as well as the current uptime are now viewable in proc/stp.md. |
| Search by POST documentation added | 866 | This feature enables using the request body to pass all search terms and parameters. Good for long queries that can't be passed in the URL. See Syntax 2 in Query for Infotons Using Field Conditions to learn more. |
Bug Fixes¶
| Title | Git Issue | Description |
|---|---|---|
| Search by POST bug | 843 | Invoking a Search query with the POST verb didn't work on the root path. |
| Recovery from crash in DCC streaming | 762 | The Data Consistency Crawler (DCC) is now robust when it crashes while streaming. |
| False positive for new Infotons | 787 | Fixed false positive for new Infotons. |
| DCC crash for malformed history data | 766 | Previously the DCC would crash if history data was malformed. |
| Large file infotons duplicated | 778 | Previously file infotons larger than 512KB would be duplicated. |
| Don't force version=1 when updating ElasticSearch | 773 | Previously, we always forced version-1 when writing to ES. This caused duplicates in some cases, e.g. when x-fix was used on the relevant path. |
| BG created duplicates after a crash | 801 | When the BG process crashes, it restarts and may replay ingest commands that were already processed. This sometimes led to duplicate infotons. Now fixed by introducing Recovery Mode: when the BG process starts, it keeps the oldest existing Kafka offset. Until hitting that offset, it processes commands carefully, while not allowing duplicates to be created. |
| STP token time not always saved | 836 | The token time was not always saved for the Sparql Triggered Processor. Would cause an empty sensor row to be displayed in CM-Well Health UI. |
Changes to API¶
None.