Transport Error - 503 - UnavailableShardsException

I am a novice on elasticsearch. Please help.

I am using pyelasticsearch for elasticsearch 0.90.10

I am indexing a new document. It was working fine since last few months.
Now any index request gives the following error.

TransportError: TransportError(503,
u'UnavailableShardsException[[article-index][0] [2] shardIt, [0] active :
Timeout waiting for [1m], request: index {[article-index][article][,2817,2458574,00.asp], source[{"domain": "", "tags": ["android", "djay-2", "florida", "illinois",
"iphone", "itunes", "organize-your-spotify-playlists", "oskar-stal",
"passwords", "pcmag", "spotify", "users", "windows-phone"], "url": ",2817,2458574,00.asp", "text":
"Music-streaming service Spotify is the latest company to report a security
breach.\n\nIn a Tuesday blog post, Oskar St\u00e5l, Spotify's CTO, said
it has identified \"unauthorized access to our systems and internal
company data.\"\n\nAccording to Spotify, the breach affected just one
user. \"This did not include any password, financial or payment
information. We have contacted this one individual,\" St\u00e5l wrote.
\"Based on our findings, we are not aware of any increased risk to users
as a result of this incident.\"\n\nStill, as a \"general precaution,\"
certain Spotify users will be signed out and asked to re-enter their
usernames and passwords over the coming days.\n\nThe firm will also
release an updated Android app, and encouraged users to upgrade. \"Please
note that offline playlists will have to be re-downloaded in the new
version,\" St\u00e5l said. \"We apologize for any inconvenience this
causes, but hope you understand that this is a necessary precaution to
safeguard the quality of our service and protect our users.\"\n\nApple
iOS and Windows Phone users do not need to take any action at this
time.\n\nThe announcement comes shortly after eBay asked its users to
reset their passwords following a breach. Officials in Illinois, Florida,
and Connecticut have since joined forces for an investigation into the
circumstances surrounding the hack, which occurred earlier this year and
compromised encrypted passwords and non-financial data.\n\nSpotify,
meanwhile, recently topped 10 million paid subscribers, and announced a new
integration with popular DJ app, djay 2. The latest version of djay 2 lets
iPhone and iPad users mix tracks from Spotify's library of more than 20
million songs. Djay 2 users were previously limited to the songs in their
iTunes libraries.\n\nFor more, see PCMag's review of Spotify (for
iPhone), as well as Spotify (for Android) and Spotify (for iPad). Also
check out Get Organized: How to Organize Your Spotify Playlists.", "title":
"Spotify Hacked, Urges Android Users to Upgrade", "articleid": 212929}]}]')

Appreciate any help. Thanks

Pratik Poddar

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