[YARN-7128] The error message in TimelineSchemaCreator is not enough to find out the error.

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.0.0-beta1
• Fix Version/s: 3.0.0-beta1
• Component/s: timelineserver
• Hadoop Flags: Reviewed
• Assignee: Jinjiang Ling
• Reporter: Jinjiang Ling
• Created: 30/Aug/17 08:17
• Updated: 11/Sep/17 23:43
• Resolved: 11/Sep/17 23:24

Description

When I run the schema creator tool of timeline service v2, then an error happened with the error message below:

17/08/30 16:04:18 INFO zookeeper.ClientCnxn: Session establishment complete on server zdh175/10.43.183.175:2181, sessionid = 0x15e0d065a330019, negotiated timeout = 180000
17/08/30 16:04:18 WARN util.HeapMemorySizeUtil: hbase.regionserver.global.memstore.upperLimit is deprecated by hbase.regionserver.global.memstore.size
17/08/30 16:04:18 ERROR storage.TimelineSchemaCreator: Error in creating hbase tables: java.lang.reflect.InvocationTargetException
17/08/30 16:04:18 WARN storage.TimelineSchemaCreator: Schema creation finished with the following exceptions
17/08/30 16:04:18 WARN storage.TimelineSchemaCreator: java.lang.reflect.InvocationTargetException

But I can't tell which error caused this exception with message.

Then I find it only print the exception message in TimelineSchemaCreator

  try {
    ......
  } catch (IOException e) {
      LOG.error("Error in creating hbase tables: " + e.getMessage());
      exceptions.add(e);
  }

I change it like this

  try {
    ......
  } catch (IOException e) {
      LOG.error("Error in creating hbase tables: ", e);
      exceptions.add(e);
  }

finally, I get the detail of this error, and it's caused by a directory of hbase not created.

at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.<init>(ConnectionManager.java:648)
... 10 more
Caused by: java.lang.RuntimeException: Failed to create local dir /data1/zdh/hbase/tmp/RegionServer/local/jars, DynamicClassLoader failed to init
at org.apache.hadoop.hbase.util.DynamicClassLoader.initTempDir(DynamicClassLoader.java:110)
at org.apache.hadoop.hbase.util.DynamicClassLoader.<init>(DynamicClassLoader.java:98)
at org.apache.hadoop.hbase.protobuf.ProtobufUtil.<clinit>(ProtobufUtil.java:244)
... 15 more
17/08/30 16:03:42 WARN storage.TimelineSchemaCreator: Schema creation finished with the following exceptions
17/08/30 16:03:42 WARN storage.TimelineSchemaCreator: java.lang.reflect.InvocationTargetException

As the exception message is not enough to find out the error, so I think print all the information of the exception in TimelineSchemaCreator is better.