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Simon Willnauer 165d2d5ff5 LUCENE-8813: Ensure we never apply deletes from a closed DWPTDeleteQueue 
Today we don't have a strong protection that we add and apply deletes / updates
on or from an already flushed delete queue. DWPTDeleteQueue instances are replaced
once we do a full flush in order to reopen an NRT reader or commit the IndexWriter.

In LUCENE-8813 we tripped an assert that used to protect us from such an situation
but it didn't take all cornercases from concurrent flushing into account. This change
adds a stronger protection and ensures that we neither apply a closed delete queue nor
add any updates or deletes to it.

This change also allows to speculativly freeze the global buffer that might return
null now if the queue has already been closed. This is now possible since we ensure that
we never see modifications to the queue after it's been closed and that happens right after
the last DWPT for the ongoing full flush is done flushing.
 		2019-05-28 16:44:34 +02:00
dev-tools Updating DOAP for 8.1 release 2019-05-16 12:49:25 +05:30
lucene LUCENE-8813: Ensure we never apply deletes from a closed DWPTDeleteQueue 2019-05-28 16:44:34 +02:00
solr SOLR-12941: Fix IndexSizeTrigger to correctly work with "aboveBytes" and "splitMethod=link" parameters. 2019-05-28 11:34:57 +02:00
.gitignore .gitignore: /maven-build 2017-09-20 15:31:25 -04:00
.hgignore LUCENE-2792: add FST impl 2010-12-12 15:36:08 +00:00
README.md docs(intelliJSetup): Mention the link related to project-setup in IDE 2019-01-20 12:20:11 -08:00
build.xml Update JGit for working copy checks and explicitely set nop-logging 2019-04-20 01:55:23 +02:00

README.md

Apache Lucene and Solr

Apache Lucene is a high-performance, full featured text search engine library written in Java.

Apache Solr is an enterprise search platform written using Apache Lucene. Major features include full-text search, index replication and sharding, and result faceting and highlighting.

Online Documentation

This README file only contains basic setup instructions. For more comprehensive documentation, visit:

Building Lucene/Solr

(You do not need to do this if you downloaded a pre-built package.)

Lucene and Solr are built using Apache Ant. To build Lucene and Solr, run:

ant compile

If you see an error about Ivy missing while invoking Ant (e.g., .ant/lib does not exist), run ant ivy-bootstrap and retry.

Sometimes you may face issues with Ivy (e.g., an incompletely downloaded artifact). Cleaning up the Ivy cache and retrying is a workaround for most of such issues:

rm -rf ~/.ivy2/cache

The Solr server can then be packaged and prepared for startup by running the following command from the solr/ directory:

ant server

Running Solr

After building Solr, the server can be started using the bin/solr control scripts. Solr can be run in either standalone or distributed (SolrCloud mode).

To run Solr in standalone mode, run the following command from the solr/ directory:

bin/solr start

To run Solr in SolrCloud mode, run the following command from the solr/ directory:

bin/solr start -c

The bin/solr control script allows heavy modification of the started Solr. Common options are described in some detail in solr/README.txt. For an exhaustive treatment of options, run bin/solr start -h from the solr/ directory.

Development/IDEs

Ant can be used to generate project files compatible with most common IDEs. Run the ant command corresponding to your IDE of choice before attempting to import Lucene/Solr.

  • Eclipse - ant eclipse (See this for details)
  • IntelliJ - ant idea (See this for details)
  • Netbeans - ant netbeans (See this for details)

Running Tests

The standard test suite can be run with the command:

ant test

Like Solr itself, the test-running can be customized or tailored in a number or ways. For an exhaustive discussion of the options available, run:

ant test-help

Contributing

Please review the Contributing to Solr Guide for information on contributing.

Discussion and Support