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From "Anurag Sharma (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-6598) Solr Collections API, case sensitivity of collection name and core's/replica's instance directory
Date Sun, 02 Nov 2014 05:47:34 GMT

    [ https://issues.apache.org/jira/browse/SOLR-6598?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14193718#comment-14193718
] 

Anurag Sharma commented on SOLR-6598:
-------------------------------------

I am able to reproducible on windows/cygwin. 
Interesting observation, it allows creation creation of 'tEsT' but not 'TEST' after creation
of 'test' collection.

{code}
$ curl 'http://localhost:8983/solr/admin/collections?action=CREATE&name=test&numShards=1&collection.configName=myconf&indent=true&wt=json'
{
  "responseHeader":{
    "status":0,
    "QTime":8565},
  "success":{
    "":{
      "responseHeader":{
        "status":0,
        "QTime":8003},
      "core":"test_shard1_replica1"}}}

$ curl 'http://localhost:8983/solr/admin/collections?action=CREATE&name=test&numShards=1&collection.configName=myconf&indent=true&wt=json'
{
  "responseHeader":{
    "status":400,
    "QTime":156},
  "Operation create caused exception:":"org.apache.solr.common.SolrException:org.apache.solr.common.SolrException:
collection already exists: test",
  "exception":{
    "msg":"collection already exists: test",
    "rspCode":400},
  "error":{
    "msg":"collection already exists: test",
    "code":400}}

$ curl 'http://localhost:8983/solr/admin/collections?action=CREATE&name=TEST&numShards=1&collection.configName=myconf&indent=true&wt=json'
{
  "responseHeader":{
    "status":0,
    "QTime":7768},
  "failure":{
    "":"org.apache.solr.client.solrj.impl.HttpSolrServer$RemoteSolrException:Error CREATEing
SolrCore 'TEST_shard1_replica1': Unable to create core [TEST_shard1_replica1] Caused by: Lock
obtain timed out: NativeFSLock@C:\\work\\trunk\\solr\\node2\\solr\\test_shard1_replica1\\data\\index\\write.lock"}}

$ curl 'http://localhost:8983/solr/admin/collections?action=CREATE&name=TEST1&numShards=1&collection.configName=myconf&indent=true&wt=json'
{
  "responseHeader":{
    "status":0,
    "QTime":6869},
  "success":{
    "":{
      "responseHeader":{
        "status":0,
        "QTime":6415},
      "core":"TEST1_shard1_replica1"}}}

$ curl 'http://localhost:8983/solr/admin/collections?action=CREATE&name=tEsT&numShards=1&collection.configName=myconf&indent=true&wt=json'
{
  "responseHeader":{
    "status":0,
    "QTime":6471},
  "success":{
    "":{
      "responseHeader":{
        "status":0,
        "QTime":6064},
      "core":"tEsT_shard1_replica1"}}}

$ curl 'http://localhost:8983/solr/admin/collections?action=CREATE&name=TEST&numShards=1&collection.configName=myconf&indent=true&wt=json'
{
  "responseHeader":{
    "status":0,
    "QTime":8690},
  "failure":{
    "":"org.apache.solr.client.solrj.impl.HttpSolrServer$RemoteSolrException:Error CREATEing
SolrCore 'TEST_shard1_replica1': Unable to create core [TEST_shard1_replica1] Caused by: Lock
obtain timed out: NativeFSLock@C:\\work\\trunk\\solr\\node2\\solr\\test_shard1_replica1\\

$ curl 'http://localhost:8983/solr/admin/collections?action=CREATE&name=TEst&numShards=1&collection.configName=myconf&indent=true&wt=json'
{
  "responseHeader":{
    "status":0,
    "QTime":5920},
  "failure":{
    "":"org.apache.solr.client.solrj.impl.HttpSolrServer$RemoteSolrException:Error CREATEing
SolrCore 'TEst_shard1_replica1': Unable to create core [TEst_shard1_replica1] Caused by: Lock
obtain timed out: NativeFSLock@C:\\work\\trunk\\solr\\node2\\solr\\test_shard1_replica1\\data\\index\\write.lock"}}

$ curl 'http://localhost:8983/solr/admin/collections?action=CREATE&name=Test&numShards=1&collection.configName=myconf&indent=true&wt=json'
{
  "responseHeader":{
    "status":0,
    "QTime":6332},
  "failure":{
    "":"org.apache.solr.client.solrj.impl.HttpSolrServer$RemoteSolrException:Error CREATEing
SolrCore 'Test_shard1_replica1': Unable to create core [Test_shard1_replica1] Caused by: Lock
obtain timed out: NativeFSLock@C:\\work\\trunk\\solr\\node1\\solr\\tEsT_shard1_replica1\\data\\index\\write.lock"}}

$ curl 'http://localhost:8983/solr/admin/collections?action=CREATE&name=Test1&numShards=1&collection.configName=myconf&indent=true&wt=json'
{
  "responseHeader":{
    "status":0,
    "QTime":6214},
  "success":{
    "":{
      "responseHeader":{
        "status":0,
        "QTime":5636},
      "core":"Test1_shard1_replica1"}}}

{code}

> Solr Collections API, case sensitivity of collection name and core's/replica's instance
directory
> -------------------------------------------------------------------------------------------------
>
>                 Key: SOLR-6598
>                 URL: https://issues.apache.org/jira/browse/SOLR-6598
>             Project: Solr
>          Issue Type: Bug
>          Components: SolrCloud
>    Affects Versions: 4.10.1
>         Environment: Mac OS X
>            Reporter: Alexey Serba
>            Priority: Trivial
>
> Solr Collections API returns misleading error when trying to create two collections with
the same name but with different case on MacOS file system (which is case insensitive). 
> {noformat}
> sh> curl 'http://localhost:8983/solr/admin/collections?action=CREATE&name=test&numShards=1&collection.configName=default&indent=true&wt=json'
> {
>   "responseHeader":{
>     "status":0,
>     "QTime":1949},
>   "success":{
>     "":{
>       "responseHeader":{
>         "status":0,
>         "QTime":1833},
>       "core":"test_shard1_replica1"}}}
> sh> curl 'http://localhost:8983/solr/admin/collections?action=CREATE&name=TEST&numShards=1&collection.configName=default&indent=true&wt=json'
> {
>   "responseHeader":{
>     "status":0,
>     "QTime":2509},
>   "failure":{
>     "":"org.apache.solr.client.solrj.impl.HttpSolrServer$RemoteSolrException:Error CREATEing
SolrCore 'TEST_shard1_replica1': Unable to create core [TEST_shard1_replica1] Caused by: Lock
obtain timed out: NativeFSLock@/Users/alexey/Desktop/solr-4.10.1/node1/solr/test_shard1_replica1/data/index/write.lock"}}
> {noformat}
> See {{Lock obtain timed out}} exception. It will be more user friendly to check existence
of instance dir {{test_shard1_replica1}} and return something like "Node A has replica B that
uses the same index directory" exception (instead of just trying to hijack that existing directory
and then propagating the inexplicable lock exception that arises as a result).



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