Apache Pinot Daily Email Digest (2020-09-20)

[Pinot Slack Email Digest <sn...@apache.org>]

<h3><u>#general</u></h3><br><strong>@cannonkalra: </strong>@cannonkalra has joined the channel<br><strong>@sonalm13: </strong>@sonalm13 has joined the channel<br><h3><u>#random</u></h3><br><strong>@cannonkalra: </strong>@cannonkalra has joined the channel<br><strong>@sonalm13: </strong>@sonalm13 has joined the channel<br><h3><u>#troubleshooting</u></h3><br><strong>@mailtobuchi: </strong>hey everyone, i'm trying to add STAR tree index to an existing table using the REST API. I've validated the tableConfig and did a `PUT` of the config and PUT also succeeded with http `200` but when I get back the tableConfig again, I don't see the STAR tree index config anymore.<br><strong>@mailtobuchi: </strong>Has anyone seen this? What's the best way to add STAR tree indexing and verify that?<br><h3><u>#lp-pinot-poc</u></h3><br><strong>@andrew: </strong>thanks for the suggestions. i made the changes and making progress. the load test is fairly stable for several minutes, but eventually it goes unstable and i see errors like

```org.I0Itec.zkclient.exception.ZkInterruptedException: java.lang.InterruptedException
	at org.apache.helix.manager.zk.zookeeper.ZkClient.acquireEventLock(ZkClient.java:1113) ~[pinot-all-0.5.0-SNAPSHOT-jar-with-dependencies.jar:0.5.0-SNAPSHOT-73f0459dc0f173d75dbff56ca66ea670e484ef4a]
	at org.apache.helix.manager.zk.zookeeper.ZkClient.waitForKeeperState(ZkClient.java:1091) ~[pinot-all-0.5.0-SNAPSHOT-jar-with-dependencies.jar:0.5.0-SNAPSHOT-73f0459dc0f173d75dbff56ca66ea670e484ef4a]
	at org.apache.helix.manager.zk.zookeeper.ZkClient.waitUntilConnected(ZkClient.java:1080) ~[pinot-all-0.5.0-SNAPSHOT-jar-with-dependencies.jar:0.5.0-SNAPSHOT-73f0459dc0f173d75dbff56ca66ea670e484ef4a]
	at org.apache.helix.manager.zk.ZKHelixManager.checkConnected(ZKHelixManager.java:372) ~[pinot-all-0.5.0-SNAPSHOT-jar-with-dependencies.jar:0.5.0-SNAPSHOT-73f0459dc0f173d75dbff56ca66ea670e484ef4a]
	at org.apache.helix.manager.zk.ZKHelixManager.getHelixDataAccessor(ZKHelixManager.java:593) ~[pinot-all-0.5.0-SNAPSHOT-jar-with-dependencies.jar:0.5.0-SNAPSHOT-73f0459dc0f173d75dbff56ca66ea670e484ef4a]
	at org.apache.helix.util.StatusUpdateUtil.logMessageStatusUpdateRecord(StatusUpdateUtil.java:348) [pinot-all-0.5.0-SNAPSHOT-jar-with-dependencies.jar:0.5.0-SNAPSHOT-73f0459dc0f173d75dbff56ca66ea670e484ef4a]
	at org.apache.helix.util.StatusUpdateUtil.logError(StatusUpdateUtil.java:392) [pinot-all-0.5.0-SNAPSHOT-jar-with-dependencies.jar:0.5.0-SNAPSHOT-73f0459dc0f173d75dbff56ca66ea670e484ef4a]
	at org.apache.helix.messaging.handling.HelixTask.call(HelixTask.java:166) [pinot-all-0.5.0-SNAPSHOT-jar-with-dependencies.jar:0.5.0-SNAPSHOT-73f0459dc0f173d75dbff56ca66ea670e484ef4a]
	at org.apache.helix.messaging.handling.HelixTask.call(HelixTask.java:49) [pinot-all-0.5.0-SNAPSHOT-jar-with-dependencies.jar:0.5.0-SNAPSHOT-73f0459dc0f173d75dbff56ca66ea670e484ef4a]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_265]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_265]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_265]
	at java.lang.Thread.run(Thread.java:748) [?:1.8.0_265]
Caused by: java.lang.InterruptedException
	at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireInterruptibly(AbstractQueuedSynchronizer.java:1220) ~[?:1.8.0_265]
	at java.util.concurrent.locks.ReentrantLock.lockInterruptibly(ReentrantLock.java:335) ~[?:1.8.0_265]
	at org.apache.helix.manager.zk.zookeeper.ZkClient.acquireEventLock(ZkClient.java:1111) ~[pinot-all-0.5.0-SNAPSHOT-jar-with-dependencies.jar:0.5.0-SNAPSHOT-73f0459dc0f173d75dbff56ca66ea670e484ef4a]
	... 12 more```<br><strong>@andrew: </strong><br>