[
https://issues.apache.org/jira/browse/HIVE-20927?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
yinghua_zh updated HIVE-20927:
------------------------------
Component/s: Clients
> The beeline has a dead cycle, resulting in high CPU.
> ----------------------------------------------------
>
> Key: HIVE-20927
> URL: https://issues.apache.org/jira/browse/HIVE-20927
> Project: Hive
> Issue Type: Bug
> Components: Clients
> Reporter: yinghua_zh
> Priority: Major
>
> When beeline executes the command and places it for a period of time, it is
> found that the CPU of the beeline process is very high. It is the code that
> has a dead loop.The stack is as follows:
> "Thread-4" #34 daemon prio=5 os_prio=0 tid=0x00007fbd6636d800 nid=0x162be
> sleeping[0x00007fbd2e042000]
> java.lang.Thread.State: RUNNABLE
> at java.lang.Throwable.fillInStackTrace(Native Method)
> at java.lang.Throwable.fillInStackTrace(Throwable.java:783)
> - locked <0x000000076edb39d8> (a java.sql.SQLException)
> at java.lang.Throwable.<init>(Throwable.java:265)
> at java.lang.Exception.<init>(Exception.java:66)
> at java.sql.SQLException.<init>(SQLException.java:119)
> at org.apache.hive.jdbc.HiveStatement.checkConnection(HiveStatement.java:377)
> at org.apache.hive.jdbc.HiveStatement.getQueryLog(HiveStatement.java:865)
> at org.apache.hive.jdbc.HiveStatement.getQueryLog(HiveStatement.java:849)
> at
> org.apache.hive.beeline.Commands$LogRunnable.updateQueryLog(Commands.java:1213)
> at org.apache.hive.beeline.Commands$LogRunnable.run(Commands.java:1221)
> at java.lang.Thread.run(Thread.java:745)
>
> The dead cycle code is as is as follows:
> @Override public void run() {
> while (hiveStatement.hasMoreLogs()) {
> try {
> updateQueryLog();
> Thread.sleep(queryProgressInterval);
> } catch (SQLException e) {
> commands.error(new SQLWarning(e));
> } catch (InterruptedException e) {
> commands.debug("Getting log thread is interrupted, since query is done!");
> commands.showRemainingLogsIfAny(hiveStatement);
> }
> }
> }
> }
>
>
> when the mehtod (checkConnection("getQueryLog");)occurs exception,the
> condition "hiveStatement.hasMoreLogs()" is still true,exist the dead lop,but
> the thread sleep code is not be run,so the CPU is high!
>
>
>
>
>
>
>
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
