[jira] [Created] (ZOOKEEPER-3490) Zookeeper follower's not reflecting writes (after months)

Matthew Hertz created ZOOKEEPER-3490: Summary: Zookeeper follower's not reflecting writes (after months) Key: ZOOKEEPER-3490 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-3490 Project:

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KIP-500: Replace ZooKeeper with a Self-Managed Metadata Quorum

Folks, Some of you might already see this. Comments? https://cwiki.apache.org/confluence/display/KAFKA/KIP-500%3A+Replace+ZooKeeper+with+a+Self-Managed+Metadata+Quorum What caught my eyes are: *Worse still, although ZooKeeper is the store of record, the state in ZooKeeper often doesn't match

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Re: KIP-500: Replace ZooKeeper with a Self-Managed Metadata Quorum

Michael I think you are describing subscribe - this? https://issues.apache.org/jira/browse/ZOOKEEPER-153 wasn't there some work done to keep tlogs around for a while? Or am I miss remembering? (fb folks?) I'll also add that we haven't done any benchmarking in quite some time. It would be

Re: KIP-500: Replace ZooKeeper with a Self-Managed Metadata Quorum

Hi Pat, Yes, ZOOKEEPER-153 could help this case. The gist of the issue is reliable change notification with data. The linearizable read I had in mind alone might not solve this as it's missing the reliably capturing change notification part. >> I'll also add that we haven't done any benchmarking

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Re: KIP-500: Replace ZooKeeper with a Self-Managed Metadata Quorum

Very well said, thank you Ted! >> I would still opt for quorum outside rather than quorum as a library. One observation on out side quorum vs library: for Raft, cockroach db and TiDB both choose the library approach instead of depending on etcd, though they all share the etcd's Raft

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Re: KIP-500: Replace ZooKeeper with a Self-Managed Metadata Quorum

The core issue in these situations in my experience is that having the quorum as a separate service can be a pain point. This misunderstanding about how watches work and why they don't provide the data is just a symptom of this. Having an integrated quorum is very attractive from the point of view

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[jira] [Created] (ZOOKEEPER-3491) Specify commitLogCount value using a system property

Vladimir Ivić created ZOOKEEPER-3491: Summary: Specify commitLogCount value using a system property Key: ZOOKEEPER-3491 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-3491 Project: ZooKeeper

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[jira] [Created] (ZOOKEEPER-3488) Possible information leakage to log without LOG configuration control LOG.isInfoEnabled()

xiaoqin.fu created ZOOKEEPER-3488: - Summary: Possible information leakage to log without LOG configuration control LOG.isInfoEnabled() Key: ZOOKEEPER-3488 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-3488

[jira] [Created] (ZOOKEEPER-3489) Possible information leakage to log without LOG configuration control LOG.isWarnEnabled()

xiaoqin.fu created ZOOKEEPER-3489: - Summary: Possible information leakage to log without LOG configuration control LOG.isWarnEnabled() Key: ZOOKEEPER-3489 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-3489

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[jira] [Created] (ZOOKEEPER-3487) Execution the same conditional statement twice in ZooTrace

xiaoqin.fu created ZOOKEEPER-3487: - Summary: Execution the same conditional statement twice in ZooTrace Key: ZOOKEEPER-3487 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-3487 Project: ZooKeeper

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