Nanda kumar created HDDS-1854:
---------------------------------
Summary: Print intuitive error message at client when the pipeline
returned by SCM has no datanode
Key: HDDS-1854
URL: https://issues.apache.org/jira/browse/HDDS-1854
Project: Hadoop Distributed Data Store
Issue Type: Improvement
Components: Ozone Client
Reporter: Nanda kumar
We are throwing {{IllegalArgumentException}} in OzoneClient when the pipeline
returned by SCM doesn't have any datanode information. Instead of throwing
{{IllegalArgumentException}}, we can throw custom user friendly exception which
is easy to understand.
Existing exception trace:
{noformat}
AssertionError: Ozone get Key failed with
output=[java.lang.IllegalArgumentException
at
com.google.common.base.Preconditions.checkArgument(Preconditions.java:72)
at
org.apache.hadoop.hdds.scm.XceiverClientManager.acquireClient(XceiverClientManager.java:150)
at
org.apache.hadoop.hdds.scm.XceiverClientManager.acquireClientForReadData(XceiverClientManager.java:143)
at
org.apache.hadoop.hdds.scm.storage.BlockInputStream.getChunkInfos(BlockInputStream.java:154)
at
org.apache.hadoop.hdds.scm.storage.BlockInputStream.initialize(BlockInputStream.java:118)
at
org.apache.hadoop.hdds.scm.storage.BlockInputStream.read(BlockInputStream.java:222)
at
org.apache.hadoop.ozone.client.io.KeyInputStream.read(KeyInputStream.java:171)
at
org.apache.hadoop.ozone.client.io.OzoneInputStream.read(OzoneInputStream.java:47)
at java.base/java.io.InputStream.read(InputStream.java:205)
at org.apache.hadoop.io.IOUtils.copyBytes(IOUtils.java:94)
at
org.apache.hadoop.ozone.web.ozShell.keys.GetKeyHandler.call(GetKeyHandler.java:98)
at
org.apache.hadoop.ozone.web.ozShell.keys.GetKeyHandler.call(GetKeyHandler.java:48)
at picocli.CommandLine.execute(CommandLine.java:1173)
at picocli.CommandLine.access$800(CommandLine.java:141)
at picocli.CommandLine$RunLast.handle(CommandLine.java:1367)
at picocli.CommandLine$RunLast.handle(CommandLine.java:1335)
at
picocli.CommandLine$AbstractParseResultHandler.handleParseResult(CommandLine.java:1243)
at picocli.CommandLine.parseWithHandlers(CommandLine.java:1526)
at picocli.CommandLine.parseWithHandler(CommandLine.java:1465)
at org.apache.hadoop.hdds.cli.GenericCli.execute(GenericCli.java:65)
at
org.apache.hadoop.ozone.web.ozShell.OzoneShell.execute(OzoneShell.java:60)
at org.apache.hadoop.hdds.cli.GenericCli.run(GenericCli.java:56)
at
org.apache.hadoop.ozone.web.ozShell.OzoneShell.main(OzoneShell.java:53)]
{noformat}
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