SRM 4.8: Data Collection From Isilon - PowerScale Collector Stopped Suddenly with Errors in the Logs

Summary: Isilon (PowerScale) collector shows constant errors in the logs which result in a stoppage of data collection and tasks failing.

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Symptoms

Isilon (PowerScale) collecting logs consistently showed the below error messages:  
SEVERE     -- [yyyy-mm-dd hh:mm:ss PDT] -- AbstractStreamHandlerJob::prepareNextStep(): Error executing handler XmlReader
com.watch4net.apg.ubertext.parsing.stream.StreamException: Invalid XPath expression if (/OBJECT/(resolve_time = '0' or resolve_time = 'null' or resolve_time = time or ( resolve_time > @{LastStartTime} and time > @{LastStartTime}) )) then /OBJECT/time else ''
    at com.watch4net.apg.ubertext.parsing.stream.StreamUtils.createExpression(StreamUtils.java:322)
    at com.watch4net.apg.ubertext.parsing.stream.StreamUtils.getXpathResult(StreamUtils.java:283)
    at com.watch4net.apg.ubertext.parsing.stream.StreamUtils.getXpathResult(StreamUtils.java:257)
    at com.watch4net.apg.ubertext.parsing.reader.XmlReader.execute(XmlReader.java:70)
    at com.watch4net.apg.ubertext.parsing.AbstractSimpleStreamHandler.handleExecution(AbstractSimpleStreamHandler.java:41)
    at com.watch4net.apg.ubertext.parsing.concurrent.AbstractStreamHandlerJob.prepareNextStep(AbstractStreamHandlerJob.java:170)
    at com.watch4net.apg.ubertext.parsing.concurrent.SimpleStreamHandlerJob.step(SimpleStreamHandlerJob.java:44)
    at com.watch4net.apg.concurrent.executor.AbstractJobExecutor$SequentialJob.step(AbstractJobExecutor.java:460)
    at com.watch4net.apg.concurrent.executor.AbstractJobExecutor.executeJobRunner(AbstractJobExecutor.java:130)
    at com.watch4net.apg.concurrent.executor.AbstractJobExecutor.access$500(AbstractJobExecutor.java:25)
    at com.watch4net.apg.concurrent.executor.AbstractJobExecutor$JobRunnerImpl.run(AbstractJobExecutor.java:287)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:750)
Caused by: javax.xml.xpath.XPathExpressionException: net.sf.saxon.trans.XPathException: @ must be followed by a NodeTest
    at net.sf.saxon.xpath.XPathEvaluator.compile(XPathEvaluator.java:411)
    at com.watch4net.apg.ubertext.parsing.stream.StreamUtils.createExpression(StreamUtils.java:320)
    ... 13 more
Caused by: net.sf.saxon.trans.XPathException: @ must be followed by a NodeTest
    at net.sf.saxon.expr.parser.ExpressionParser.grumble(ExpressionParser.java:272)
    at net.sf.saxon.expr.parser.ExpressionParser.grumble(ExpressionParser.java:226)
    at net.sf.saxon.expr.parser.ExpressionParser.grumble(ExpressionParser.java:213)
    at net.sf.saxon.expr.parser.ExpressionParser.parseBasicStep(ExpressionParser.java:1802)
    at net.sf.saxon.expr.parser.ExpressionParser.parseStepExpression(ExpressionParser.java:1636)
    at net.sf.saxon.expr.parser.ExpressionParser.parseRelativePath(ExpressionParser.java:1562)
    at net.sf.saxon.expr.parser.ExpressionParser.parsePathExpression(ExpressionParser.java:1529)

Cause

Possible issue with the XML files which make up the solution pack.

Resolution

Editing and reconfiguring the solution pack data collection component and pushing the default files for the solution pack addressed the issue. To edit and reconfigure the solution pack, follow the steps below:
  1. Go to the Administration page of SRM Console
  2. Click Config > Solution Packs > Installed Solution Packs
  3. Under Installed Solution Packs, click Dell PowerScale (Isilon)
  4. Click the Pencil icon next to the Data Collection section of Isilon
  5. Verify and validate that all the settings are pointing to the correct server and port, and so forth.
  6. Click Reconfigure
NOTE: If this solution pack was manually edited previously to apply any workaround in the current version to fix any issue, that workaround must be reapplied.
Article Properties
Article Number: 000218264
Article Type: Solution
Last Modified: 13 Oct 2023
Version:  2
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