[
https://issues.apache.org/jira/browse/CASSANDRA-1345?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12894488#action_12894488
]
Sanjay Sharma commented on CASSANDRA-1345:
------------------------------------------
A workaround can be using sstable2json and json2sstable based data porting.
This actually may be the correct logical approach and in line with other RDBMS
operations.
The reason why this is important for Cassandra for now is that people will tend
to move on to newer versions and chances of reverting back to earlier versions
is higher in case of stability issues.
Hence, it should be a part of FAQ or user guide that the right way of migrating
from one version to another should idellay be through json-sstable
export/import. This also means that the json-sstable utilties should be able to
functio across different versions.
> Cassandra 0.6.3 fails to restart if Cassandra 0.7 trunk (rev 981071) is run
> on the same data system store
> ---------------------------------------------------------------------------------------------------------
>
> Key: CASSANDRA-1345
> URL: https://issues.apache.org/jira/browse/CASSANDRA-1345
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Affects Versions: 0.7 beta 1
> Environment: Cassandra 0.6.3 , Cassandra 0.7 trunk rev 981071 ,
> jdk1.6, Windows XP
> Reporter: Sanjay Sharma
> Priority: Minor
>
> The bigger question is whether downward compatibility is going to be
> supported on not!
> The steps were-
> a. Was running an application successfully on Cassandra 0.6.3 built from src
> on Win XP
> b. Ran Cassandra 0.7 trunk rev 981071 without changing any conf parameters.
> The server ran successfully.
> c. Stopped 0.7 server
> d. Started 0.6.3 version- exception was reported.
> The trace is-
> D:\data\dev\trials\nosql\apache-cassandra-0.6.3-src\bin>set
> CASSANDRA_HOME=D:\data\dev\trials\nosql\apache-cassandra-0.6.3-src
> Starting Cassandra Server
> Listening for transport dt_socket at address: 8888
> INFO 12:40:33,921 Auto DiskAccessMode determined to be standard
> INFO 12:40:34,296 Sampling index for
> D:\var\lib\cassandra\data\system\LocationInfo-e-47-Data.db
> ERROR 12:40:34,296 Exception encountered during startup.
> java.lang.StringIndexOutOfBoundsException: String index out of range: -1
> at java.lang.String.substring(String.java:1938)
> at
> org.apache.cassandra.dht.RandomPartitioner.convertFromDiskFormat(RandomPartitioner.java:50)
> at
> org.apache.cassandra.io.SSTableReader.loadIndexFile(SSTableReader.java:259)
> at org.apache.cassandra.io.SSTableReader.open(SSTableReader.java:121)
> at org.apache.cassandra.io.SSTableReader.open(SSTableReader.java:110)
> at
> org.apache.cassandra.db.ColumnFamilyStore.<init>(ColumnFamilyStore.java:178)
> at
> org.apache.cassandra.db.ColumnFamilyStore.createColumnFamilyStore(ColumnFamilyStore.java:248)
> at org.apache.cassandra.db.Table.<init>(Table.java:338)
> at org.apache.cassandra.db.Table.open(Table.java:199)
> at
> org.apache.cassandra.db.SystemTable.checkHealth(SystemTable.java:124)
> at
> org.apache.cassandra.thrift.CassandraDaemon.setup(CassandraDaemon.java:94)
> at
> org.apache.cassandra.thrift.CassandraDaemon.main(CassandraDaemon.java:211)
> Exception encountered during startup.
> java.lang.StringIndexOutOfBoundsException: String index out of range: -1
> at java.lang.String.substring(String.java:1938)
> at
> org.apache.cassandra.dht.RandomPartitioner.convertFromDiskFormat(RandomPartitioner.java:50)
> at
> org.apache.cassandra.io.SSTableReader.loadIndexFile(SSTableReader.java:259)
> at org.apache.cassandra.io.SSTableReader.open(SSTableReader.java:121)
> at org.apache.cassandra.io.SSTableReader.open(SSTableReader.java:110)
> at
> org.apache.cassandra.db.ColumnFamilyStore.<init>(ColumnFamilyStore.java:178)
> at
> org.apache.cassandra.db.ColumnFamilyStore.createColumnFamilyStore(ColumnFamilyStore.java:248)
> at org.apache.cassandra.db.Table.<init>(Table.java:338)
> at org.apache.cassandra.db.Table.open(Table.java:199)
> at
> org.apache.cassandra.db.SystemTable.checkHealth(SystemTable.java:124)
> at
> org.apache.cassandra.thrift.CassandraDaemon.setup(CassandraDaemon.java:94)
> at
> org.apache.cassandra.thrift.CassandraDaemon.main(CassandraDaemon.java:211)
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
