Yuyuan KANG created IOTDB-896:
---------------------------------
Summary: [Distributed] Fail to Insert Nonexistent Timeseries
Key: IOTDB-896
URL: https://issues.apache.org/jira/browse/IOTDB-896
Project: Apache IoTDB
Issue Type: Bug
Reporter: Yuyuan KANG
Assignee: Yuyuan KANG
*Problem Description:*
SessionExample.java fails to run successfully. It seems blocked when tablets
are inserted, i.e., when insertTablets() method is running.
*Problem Analysis:*
A coordinator receives insert request from client and forwards it to a remote
data group. The data group leader cannot find the measurements. The measurement
is marked null if the path does not exist. It will pull timeseries schemas and
insert again, which is implemented in Raftmember.handleLogExecutionException(),
but with failed measurements being null. With these null measurements,
PlanExecutor will throw a NullPointerException, which is not caught by the
system. AsyncDataLogApplier will not catch this exception, and it will not set
the log as applied, in method applyInternal(Log log). As a consequence, it
seems the log is never applied, which blocks the queue.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
