Arshad Mohammad created ZOOKEEPER-2277:
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Summary: Zookeeper off-line snapshot and transaction log viewer
Key: ZOOKEEPER-2277
URL: https://issues.apache.org/jira/browse/ZOOKEEPER-2277
Project: ZooKeeper
Issue Type: Improvement
Reporter: Arshad Mohammad
Assignee: Arshad Mohammad
Fix For: 3.5.2
{color:blue}Currently ZooKeeper provides utility java program to view the
snapshot and transaction off-line but these are not easy to use, also the
content is less understandable {color}
In this improvement task I propose following functionality:
1) add zkTool.sh script to view snapshot and transaction.
Usage: zkTool.sh -COMMAND <transaction/snapshot file>
where COMMAND is one of:
otv off-line transaction viewer, prints ZooKeeper transaction log in text
format
osv off-line snapshot viewer, prints ZooKeeper snapshot in text format
2) otv command will give output as:
{noformat}
9/4/15 4:37:04 PM IST session 0x1004d19fe6f0002 cxid 0x00000000000c2c
(epoch=0,count=3116) zxid 0x00000100000c49 (epoch=1,count=3145) create
path="/4da53875-b471-4ab1-9995-03889e73c0a3/node246",data="Quick brown fox
jumps over the lazy dog
",acl{e1{perms="cdrwa",id{scheme="world",id="anyone"}}},ephemeral="true",parentCVersion="8"
{noformat}
It is mostly same as {{org.apache.zookeeper.server.LogFormatter}} with some
differences.
* epoch and count are separated from zxid.
* operations type will be written instead of code like createSession instead
-10.
* showing data.
* permissions are written in letters perms="cdrwa" instead of perms="31" same
as {{org.apache.zookeeper.cli.GetAclCommand}}.
* ephemeral="true" instead of ephemeral="1"
* etc.
3) osv command will give output as:
{code}
/67868d36-8bbf-4a8a-a076-f16810ac10de/node540000000010
cZxid = 0x00000100000265 (epoch=1,count=613)
ctime = Fri Sep 04 16:35:58 IST 2015
mZxid = 0x00000100000265 (epoch=1,count=613)
mtime = Fri Sep 04 16:35:58 IST 2015
pZxid = 0x00000100000265 (epoch=1,count=613)
cversion = 0
dataVersion = 0
aclVersion = 0
ephemeralOwner = 0x1004d19fe6f0002
dataLength = 40
data = Quick brown fox jumps over the lazy dog
{code}
which is almost same as {{org.apache.zookeeper.server.SnapshotFormatter}}
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