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Below are the list of critical runtime error messages that must be looked for in a deployed A-Stack environment.
Error Type | Message | Grep String | Description | Resolution | ||||||||
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ERROR | %s is used for %s more than %s msec", this, time, maxAllocTime | " is used for " | One of the TQL to SQL Mapped query is taking more than 6000 millisecond (default max time) to return. | Slow DB responses will severely degrade the performance of the runtime and may result in backed up queues, and client connection time outs.
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ERROR | %s save error[%s]: %s.%s.%s:%s=%s cn, exc.getSQLState(), aInstance, aAttribute, strOrder(aOrder) | " save error " | Error while Saving TQL Model. |
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ERROR | %s update error[%s]: %s.%s.%s:%s=%s cn, exc.getSQLState(), aInstance, aAttribute, strOrder(aOrder) | " update error" | Error while Updating TQL Model Attribute |
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ERROR | %s create error[%s]: %s.%s.%s cn, exc.getSQLState(), aInstance, aAttribute, strOrder(aOrder) | " create error" | Error while Creating TQL Model Attribute |
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ERROR | %s delete value error[%s]: %s.%s.%s Parameters are: cn, exc.getSQLState(), aInstance, aAttribute, strOrder(aOrder) | " delete value error" | Error while Deleting TQL Model Attribute |
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ERROR | Network peer connect failed for:\n%s | "Network peer connect" | Peer connection has failed. |
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ERROR | Peer message not sent:\n%s | "Peer message not sent" | Peer is not able to send message across to one of connected peer in cluster. |
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ERROR | error("Memory alarm %s: %.4f: channel(%s/%.4f) closed: %s", alarmCount, alarm, strFacetTitle(facet), importance, String.valueOf(chl)); | "Memory alarm " | Based on the Alarm value set, the Channel will reject incoming requests. |
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ERROR | Response lost: %s\n'%s'", server, strMessage(msg, maxPrintLength) | "Response lost" | Clients may have timed out and the response was not sent to client. |
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ERROR | HSQL DB has unique constraint violation exception as shown below Caused by: org.hsqldb.HsqlException: error in script file line: 59 org.hsqldb.HsqlException: integrity constraint violation: unique constraint or index violation; SYS_PK_10098 table: TR | "integrity constraint violation" | This error indicates that the HSQL Database failed to remove the record from the log file after committing to the data file. |
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WARN | %s Forbidden: No facet ID\n'%s'\n", String.valueOf(chl), NettyUtils.strMessage(msg, maxPrintLength) | "No facet ID" | Some external client is trying to access the EndPoint this is not available. |
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WARN | ModifyPipeline: AutoClosed(%s): %s", timeout, pipeline | "MofiyPipeline: AutoClosed" | Some Protocol Handler has auto closed after number of attempts |
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WARN | "%s: Maximum queue size (%d) reached: %d", getName(), defMaxQueueSize, size Example: TestFacet: Maximum queue size (1000) reached: 1000. Maximum queue size. Maximum queue size is configured via sff.max.queue.size parameter How to reproduce this sceanrio:
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| " Maximum queue size " |
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WARN | Network peer %s at %s is not available", qname, p_key | " Network peer " | When cluster node is unable to connect to one of the peer. |
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WARN | Connection refused:%s Example: SffTcpClient:855 IO error in SffNetworkFacet:wsNotificationCluster-3130539813663882016:ws>NioClientSocketChannel[id: 0x156d1566]; Caused by: java.net.ConnectException: Connection refused: /199.199.199.169:8082 | " IO error " | Connection exception while connecting to a peer. |
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Error Handling in Applications
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