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From "Michael Han (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (ZOOKEEPER-3427) Introduce SnapshotComparer that assists debugging with snapshots.
Date Thu, 15 Aug 2019 01:13:00 GMT

     [ https://issues.apache.org/jira/browse/ZOOKEEPER-3427?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Michael Han reassigned ZOOKEEPER-3427:
--------------------------------------

    Assignee: Maya Wang  (was: Michael Han)

> Introduce SnapshotComparer that assists debugging with snapshots.
> -----------------------------------------------------------------
>
>                 Key: ZOOKEEPER-3427
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-3427
>             Project: ZooKeeper
>          Issue Type: Improvement
>          Components: server
>    Affects Versions: 3.6.0
>            Reporter: Michael Han
>            Assignee: Maya Wang
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 2h 50m
>  Remaining Estimate: 0h
>
> SnapshotComparer is a tool that loads and compares two snapshots, with configurable threshold
and various filters. It's useful in use cases that involve snapshot analysis, such as offline
data consistency checking, and data trending analysis (e.g. what's growing under which zNode
path during when). 
> A sample output of the tool (actual numbers removed, due to sensitivity).
> {code:java}
> Successfully parsed options!
> Deserialized snapshot in snapshot.0 in  seconds
> Processed data tree in seconds
> Deserialized snapshot in snapshot.1 in  seconds
> Processed data tree in seconds
> Node count: 
> Total size: 
> Max depth: 
> Count of nodes at depth 1: 
> Count of nodes at depth 2: 
> Count of nodes at depth 3: 
> Count of nodes at depth 4: 
> Count of nodes at depth 5: 
> Count of nodes at depth 6: 
> Count of nodes at depth 7: 
> Count of nodes at depth 8: 
> Count of nodes at depth 9: 
> Count of nodes at depth 10: 
> Count of nodes at depth 11: 
> Node count: 
> Total size: 
> Max depth: 
> Count of nodes at depth 1: 
> Count of nodes at depth 2: 
> Count of nodes at depth 3: 
> Count of nodes at depth 4: 
> Count of nodes at depth 5:
> Count of nodes at depth 6:
> Count of nodes at depth 7: 
> Count of nodes at depth 8: 
> Count of nodes at depth 9: 
> Count of nodes at depth 10: 
> Count of nodes at depth 11: 
> Analysis for depth 0
> Analysis for depth 1
> Analysis for depth 2
> Analysis for depth 3
> Analysis for depth 4
> Analysis for depth 5
> Analysis for depth 6
> Analysis for depth 7
> Analysis for depth 8
> Analysis for depth 9
> Analysis for depth 10
> {code}



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