Zhuqi Jin created CASSANDRA-15794:
-------------------------------------
Summary: Upgraded C* (4.x) fail to start because of Compact Tables
& downgraded C* (3.11.4) fail to start because of commit log
Key: CASSANDRA-15794
URL: https://issues.apache.org/jira/browse/CASSANDRA-15794
Project: Cassandra
Issue Type: Bug
Reporter: Zhuqi Jin
We tried to test upgrading a 3.11.4 C* cluster to 4.x and run into the
following problems.
* We started a single 3.11.4 C* node.
* We ran cassandra-stress like this
{code:java}
./cassandra-stress write n = 30 -rate threads = 10 -node 172.17.0.2 {code}
* We stopped this node, and started a C* node running C* compiled from trunk
(git commit: e394dc0bb32f612a476269010930c617dd1ed3cb)
* New C* failed to start with the following error message
{code:java}
ERROR [main] 2020-05-07 00:58:18,503 CassandraDaemon.java:245 - Error while
loading schema: ERROR [main] 2020-05-07 00:58:18,503 CassandraDaemon.java:245 -
Error while loading schema: java.lang.IllegalArgumentException: Compact Tables
are not allowed in Cassandra starting with 4.0 version. Use `ALTER ... DROP
COMPACT STORAGE` command supplied in 3.x/3.11 Cassandra in order to migrate off
Compact Storage. at
org.apache.cassandra.schema.SchemaKeyspace.fetchTable(SchemaKeyspace.java:965)
at
org.apache.cassandra.schema.SchemaKeyspace.fetchTables(SchemaKeyspace.java:924)
at
org.apache.cassandra.schema.SchemaKeyspace.fetchKeyspace(SchemaKeyspace.java:883)
at
org.apache.cassandra.schema.SchemaKeyspace.fetchKeyspacesWithout(SchemaKeyspace.java:874)
at
org.apache.cassandra.schema.SchemaKeyspace.fetchNonSystemKeyspaces(SchemaKeyspace.java:862)
at org.apache.cassandra.schema.Schema.loadFromDisk(Schema.java:102) at
org.apache.cassandra.schema.Schema.loadFromDisk(Schema.java:91) at
org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:241) at
org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:653)
at
org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:770)Exception
(java.lang.IllegalArgumentException) encountered during startup: Compact
Tables are not allowed in Cassandra starting with 4.0 version. Use `ALTER ...
DROP COMPACT STORAGE` command supplied in 3.x/3.11 Cassandra in order to
migrate off Compact Storage.ERROR [main] 2020-05-07 00:58:18,520
CassandraDaemon.java:792 - Exception encountered during
startupjava.lang.IllegalArgumentException: Compact Tables are not allowed in
Cassandra starting with 4.0 version. Use `ALTER ... DROP COMPACT STORAGE`
command supplied in 3.x/3.11 Cassandra in order to migrate off Compact Storage.
at
org.apache.cassandra.schema.SchemaKeyspace.fetchTable(SchemaKeyspace.java:965)
at
org.apache.cassandra.schema.SchemaKeyspace.fetchTables(SchemaKeyspace.java:924)
at
org.apache.cassandra.schema.SchemaKeyspace.fetchKeyspace(SchemaKeyspace.java:883)
at
org.apache.cassandra.schema.SchemaKeyspace.fetchKeyspacesWithout(SchemaKeyspace.java:874)
at
org.apache.cassandra.schema.SchemaKeyspace.fetchNonSystemKeyspaces(SchemaKeyspace.java:862)
at org.apache.cassandra.schema.Schema.loadFromDisk(Schema.java:102) at
org.apache.cassandra.schema.Schema.loadFromDisk(Schema.java:91) at
org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:241) at
org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:653)
at
org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:770){code}
* We stopped the trunk version C* and started the 3.11.4 version C*.
* 3.11.4 C* failed to start with the following error messages:
{code:java}
Exception (java.lang.IllegalStateException) encountered during startup: Unknown
commitlog version 7Exception (java.lang.IllegalStateException) encountered
during startup: Unknown commitlog version 7ERROR [main] 2020-05-07 01:13:26,798
CassandraDaemon.java:749 - Exception encountered during
startupjava.lang.IllegalStateException: Unknown commitlog version 7 at
org.apache.cassandra.db.commitlog.CommitLogDescriptor.getMessagingVersion(CommitLogDescriptor.java:227)
~[main/:na] at
org.apache.cassandra.db.commitlog.CommitLogReader.shouldSkipSegmentId(CommitLogReader.java:276)
~[main/:na] at
org.apache.cassandra.db.commitlog.CommitLogReader.readCommitLogSegment(CommitLogReader.java:220)
~[main/:na] at
org.apache.cassandra.db.commitlog.CommitLogReader.readAllFiles(CommitLogReader.java:132)
~[main/:na] at
org.apache.cassandra.db.commitlog.CommitLogReplayer.replayFiles(CommitLogReplayer.java:137)
~[main/:na] at
org.apache.cassandra.db.commitlog.CommitLog.recoverFiles(CommitLog.java:167)
~[main/:na] at
org.apache.cassandra.db.commitlog.CommitLog.recoverSegmentsOnDisk(CommitLog.java:148)
~[main/:na] at
org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:324)
[main/:na] at
org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:620)
[main/:na] at
org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:732)
[main/:na]
{code}
We manually deleted all new version commit logs and it worked. However, it's
not obvious whether manually deleting these commit logs are safe.
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